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Zheng L, San Y, Xing Y, Regenstein JM. Rice proteins: A review of their extraction, modification techniques and applications. Int J Biol Macromol 2024; 268:131705. [PMID: 38643916 DOI: 10.1016/j.ijbiomac.2024.131705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Rice protein is highly nutritious and easy to digest and absorb. Its hydrolyzed peptides have significant effects on lowering blood pressure and cholesterol. First, a detailed and comprehensive explanation of rice protein extraction methods was given, and it was found that the combination of enzymatic and physical methods could improve the extraction rate of rice protein, but it was only suitable for laboratory studies. Second, the methods for improving the functional properties of rice protein were introduced, including physical modification, chemical modification, and enzymatic modification. Enzymatic modification of the solubility of rice protein to improve its functional properties has certain limitations due to the low degree of hydrolysis, the long time required, the low utilization of the enzyme, and the possible undesirable taste of the product. Finally, the development and utilization of rice protein was summarized and the future research direction was suggested. This paper lists the advantages and disadvantages of various extraction techniques, points out the shortcomings of existing extraction techniques, aims to fill the gap in the field of rice protein extraction, and then provides a possible improvement method for the extraction and development of rice protein in the future.
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Affiliation(s)
- Li Zheng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Guoru Biotechnology Ltd., Harbin, Heilongjiang 150036, China.
| | - Yue San
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Yuejiao Xing
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Joe M Regenstein
- Department of Food Science, Cornell University, Ithaca, NY 14853-7201, USA
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Kim H, Appel LJ, Lichtenstein AH, Wong KE, Chatterjee N, Rhee EP, Rebholz CM. Metabolomic Profiles Associated With Blood Pressure Reduction in Response to the DASH and DASH-Sodium Dietary Interventions. Hypertension 2023; 80:1494-1506. [PMID: 37161796 PMCID: PMC10262995 DOI: 10.1161/hypertensionaha.123.20901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/10/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND The DASH (Dietary Approaches to Stop Hypertension) diets reduced blood pressure (BP) in the DASH and DASH-Sodium trials, but the underlying mechanisms are unclear. We identified metabolites associated with systolic BP or diastolic BP (DBP) changes induced by dietary interventions (DASH versus control arms) in 2 randomized controlled feeding studies-the DASH and DASH-Sodium trials. METHODS Metabolomic profiling was conducted in serum and urine samples collected at the end of diet interventions: DASH (n=219) and DASH-Sodium (n=395). Using multivariable linear regression models, associations were examined between metabolites and change in systolic BP and DBP. Tested for interactions between diet interventions and metabolites were the following comparisons: (1) DASH versus control diets in the DASH trial (serum), (2) DASH high-sodium versus control high-sodium diets in the DASH-Sodium trial (urine), and (3) DASH low-sodium versus control high-sodium diets in the DASH-Sodium trial (urine). RESULTS Sixty-five significant interactions were identified (DASH trial [serum], 12; DASH high sodium [urine], 35; DASH low sodium [urine], 18) between metabolites and systolic BP or DBP. In the DASH trial, serum tryptophan betaine was associated with reductions in DBP in participants consuming the DASH diets but not control diets (P interaction, 0.023). In the DASH-Sodium trial, urine levels of N-methylglutamate and proline derivatives (eg, stachydrine, 3-hydroxystachydrine, N-methylproline, and N-methylhydroxyproline) were associated with reductions in systolic BP or DBP in participants consuming the DASH diets but not control diets (P interaction, <0.05 for all tests). CONCLUSIONS We identified metabolites that were associated with BP lowering in response to dietary interventions. REGISTRATION URL: https://www. CLINICALTRIALS gov/ct2/show/NCT03403166; Unique identifier: NCT03403166 (DASH trial). URL: https://www. CLINICALTRIALS gov/ct2/show/NCT00000608; Unique identifier: NCT00000608 (DASH-Sodium trial).
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Affiliation(s)
- Hyunju Kim
- Department of Epidemiology (H.K., L.J.A., C.M.R.), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD (H.K., L.J.A., C.M.R.)
| | - Lawrence J. Appel
- Department of Epidemiology (H.K., L.J.A., C.M.R.), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD (L.J.A., C.M.R.)
| | - Alice H. Lichtenstein
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD (H.K., L.J.A., C.M.R.)
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA (A.H.L.)
| | - Kari E. Wong
- Metabolon, Research Triangle Park, Morrisville, NC (K.E.W.)
| | - Nilanjan Chatterjee
- Department of Biostatistics (N.C.), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Eugene P. Rhee
- Nephrology Division and Endocrine Unit, Massachusetts General Hospital, Boston, MA (E.P.R.)
| | - Casey M. Rebholz
- Department of Epidemiology (H.K., L.J.A., C.M.R.), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD (H.K., L.J.A., C.M.R.)
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Tan BL, Norhaizan ME, Chan LC. Rice Bran: From Waste to Nutritious Food Ingredients. Nutrients 2023; 15:nu15112503. [PMID: 37299466 DOI: 10.3390/nu15112503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Rice (Oryza sativa L.) is a principal food for more than half of the world's people. Rice is predominantly consumed as white rice, a refined grain that is produced during the rice milling process which removes the bran and germ and leaves the starchy endosperm. Rice bran is a by-product produced from the rice milling process, which contains many bioactive compounds, for instance, phenolic compounds, tocotrienols, tocopherols, and γ-oryzanol. These bioactive compounds are thought to protect against cancer, vascular disease, and type 2 diabetes. Extraction of rice bran oil also generates various by-products including rice bran wax, defatted rice bran, filtered cake, and rice acid oil, and some of them exert bioactive substances that could be utilized as functional food ingredients. However, rice bran is often utilized as animal feed or discarded as waste. Therefore, this review aimed to discuss the role of rice bran in metabolic ailments. The bioactive constituents and food product application of rice bran were also highlighted in this study. Collectively, a better understanding of the underlying molecular mechanism and the role of these bioactive compounds exerted in the rice bran would provide a useful approach for the food industry and prevent metabolic ailments.
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Affiliation(s)
- Bee Ling Tan
- Department of Healthcare Professional, Faculty of Health and Life Sciences, Management and Science University, University Drive, Off Persiaran Olahraga, Seksyen 13, 40100 Shah Alam, Selangor, Malaysia
| | - Mohd Esa Norhaizan
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Natural Medicines and Products Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra, Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Lee Chin Chan
- Biovalence Sdn. Bhd., 22, Jalan SS25/34, Taman Mayang, 47301 Petaling Jaya, Selangor, Malaysia
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Rice-memolin, a novel peptide derived from rice bran, improves cognitive function after oral administration in mice. Sci Rep 2023; 13:2887. [PMID: 36807368 PMCID: PMC9938899 DOI: 10.1038/s41598-023-30021-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/14/2023] [Indexed: 02/20/2023] Open
Abstract
Many people eat polished rice, while rice bran, a by-product known to be rich in protein and expected to have potential functions for health benefits, has not been effectively utilized. In this study, we determined that orally administered Val-Tyr-Thr-Pro-Gly (VYTPG) derived from rice bran protein improved cognitive decline in mice fed a high-fat diet (HFD). It was demonstrated that VYTPG was released from model peptides corresponding to fragment sequences of original rice proteins (Os01g0941500, Os01g0872700, and allergenic protein) after treatment with thermolysin, a microorganism-derived enzyme often used in industrial scale processes. The thermolysin digest also improved cognitive decline after oral administration in mice. Because VYTPG (1.0 mg/kg) potently improved cognitive decline and is enzymatically produced from the rice bran, we named it rice-memolin. Next, we investigated the mechanisms underlying the cognitive decline improvement associated with rice-memolin. Methyllycaconitine, an antagonist for α7 nicotinic acetylcholine receptor, suppressed the rice-memolin-induced effect, suggesting that rice-memolin improved cognitive decline coupled to the acetylcholine system. Rice-memolin increased the number of 5-bromo-2'-deoxyuridine (BrdU)-positive cells and promoted the mRNA expression of EGF and FGF-2 in the hippocampus, implying that these neurotropic factors play a role in hippocampal neurogenesis after rice-memolin administration. Epidemiologic studies demonstrated that diabetes is a risk factor for dementia; therefore, we also examined the effect of rice-memolin on glucose metabolism. Rice-memolin improved glucose intolerance. In conclusion, we identified a novel rice-derived peptide that can improve cognitive decline. The mechanisms are associated with acetylcholine and hippocampal neurogenesis. Rice-memolin is the first rice-brain-derived peptide able to improve cognitive decline.
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Khosravinia D, Shiraseb F, Mirzababaei A, Daneshzad E, Jamili S, Clark CCT, Mirzaei K. The association of Carbohydrate Quality Index with cardiovascular disease risk factors among women with overweight and obesity: A cross-sectional study. Front Nutr 2022; 9:987190. [PMID: 36159469 PMCID: PMC9493440 DOI: 10.3389/fnut.2022.987190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/22/2022] [Indexed: 11/20/2022] Open
Abstract
Purpose Diet is one of the most important factors influencing cardiovascular disease (CVD). The negative relationship between carbohydrate intake with lipid profiles and body weight has been previously investigated. However, this is the first study seeking to assess the association of carbohydrate quality index (CQI) with CVD risk factors. Methods This cross-sectional study was conducted on 291 Iranian overweight and obese women, with a body mass index (BMI) ranging between 25 and 40 kg/m2, and aged 18–48 years. CQI scores were calculated by using a validated 168-item semi-quantitative food frequency questionnaire (FFQ). Biochemical and anthropometric measures were assessed using standard methods, and bioelectrical impedance was used to measure body composition. Results We observed that fruits (P < 0.001), vegetables (P < 0.001), and protein (P = 0.002) intake were higher in participants with a higher score of the CQI. When we adjusted for potential confounders, we observed that the CQI was negatively related to systolic blood pressure (SBP) (β = −6.10; 95% CI = −10.11, −2.10; P = 0.003) and DBP (β = −3.11; 95% CI = −6.15, −0.08; P = 0.04). Also, greater adherence to a high CQI dietary pattern, compared to the reference group, was negatively related to HOMA-IR (β = −0.53; 95% CI = −0.94, −0.12) (P for trend = 0.01), WC (β = −3.18; 95% CI = −6.26, −0.10) (P for trend = 0.04), BMI (β = −1.21; 95% CI = −2.50, 0.07) (P for trend = 0.06), and BF (β = −2.06; 95% CI = −3.82, −0.30) (P for trend = 0.02). Conclusion In line with previous studies, the CQI was inversely associated with blood pressure, WC, BMI, and BF. Further prospective and clinical trial studies are suggested to confirm these data.
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Affiliation(s)
- Darya Khosravinia
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farideh Shiraseb
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
- Atieh Mirzababaei
| | - Elnaz Daneshzad
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Shahin Jamili
- Department of Surgery, Shahid Beheshti, Fellowship of Minimally Invasive Surgery, Tehran, Iran
| | - Cain C. T. Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, United Kingdom
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
- Food Microbiology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- *Correspondence: Khadijeh Mirzaei
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Saphyakhajorn W, Sirirat R, Sapwarobol S. Effect of defatted rice bran supplementation on metabolic parameters and inflammatory status in overweight/obese adults with hypercholesterolemia: a randomized, placebo-controlled intervention. BMC Nutr 2022; 8:94. [PMID: 36045411 PMCID: PMC9434873 DOI: 10.1186/s40795-022-00586-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 08/15/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Defatted rice bran (DRB) is a byproduct of rice bran oil production rich in fiber, protein, and antioxidant compounds that may confer beneficial effects on metabolic profiles in humans. The current study aimed to investigate the effects of DRB supplementation on anthropometric and blood biochemical indices, dietary intake, and inflammatory status in overweight/obese subjects with hypercholesterolemia. METHODS In a 12-week-randomized placebo-controlled trial, 61 overweight/obese participants with a total cholesterol level > 200 mg/dL were randomly assigned either to 30 g/d DRB (n = 30) or to 10 g/d maltodextrin (n = 31). RESULTS DRB intervention significantly reduced systolic and diastolic blood pressure by 4.27 and 4.50%, respectively (126.20 ± 13.63 to 120.60 ± 13.72 mmHg, p = 0.0003 and 80.87 ± 7.38 to 77.17 ± 9.83 mmHg, p = 0.0035). HbA1c also decreased significantly by 3.59% (5.89% ± 0.76% to 5.66% ± 0.62%, p = 0.0001) after DRB supplementation. Total cholesterol, triglyceride, and low-density lipoprotein cholesterol levels also decreased insignificantly by 3.12, 1.32, and 1.53%, respectively, after DRB supplementation. Insignificant differences in fasting blood glucose, insulin, homeostatic model assessment of insulin resistance, quantitative insulin sensitivity check index, hs-CRP and homocysteine levels were also observed after DRB intervention. Reduction in caloric and fat intake were reported in DRB groups. CONCLUSIONS DRB supplementation improved blood pressure and HbA1c levels. It also lowered blood cholesterol, albeit insignificantly. Caloric and fat intake were also significantly lower after DRB supplementation. Further study is needed to evaluate the mechanisms by which DRB improves these metabolic indices. TRIAL REGISTRATION Thai Clinical Trial Registration ( https://www.thaiclinicaltrials.org/. ) Thai Clinical Trial Registration number: TCTR20191020003. Registered 20 October 2019.
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Affiliation(s)
- Weeraya Saphyakhajorn
- Department of Nutrition and Dietetics, Graduate Program in Food and Nutrition, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Rawiwan Sirirat
- Center for Nutrition, Healthy Lifestyle, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, California, USA
| | - Suwimol Sapwarobol
- The Medical Food Research Group, Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand.
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Qu T, He S, Ni C, Wu Y, Xu Z, Chen ML, Li H, Cheng Y, Wen L. In Vitro Anti-Inflammatory Activity of Three Peptides Derived from the Byproduct of Rice Processing. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2022; 77:172-180. [PMID: 35449430 DOI: 10.1007/s11130-022-00963-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Inflammation is a contributing factor to the initiation and progression of many diseases, and some food-derived biofunctional peptides show high anti-inflammatory activity. In our previous study, we demonstrated that peptides derived from trypsin hydrolysis of rice protein show good immunological activity. In the present study, proteins of broken rice were extracted and identified by macroporous resin fractionation and liquid chromatography/tandem mass spectrometry (LC-MS/MS). Subsequently, a bioinformatics prediction and in silico simulation approach was used to screen for peptides showing anti-inflammatory activity, including inhibition of the production of nitric oxide and proinflammatory cytokines (interleukin-1β, interleukin-6, and tumor necrosis factor-α) by lipopolysaccharide-stimulated RAW264.7 mice macrophages. Three peptides (DNIQGITKPAIR, IAFKTNPNSMVSHIAGK, and IGVAMDYSASSKR) that demonstrated the highest binding affinity were synthesized, and their in vitro anti-inflammatory activity was investigated. This is the first study that integrates LC-MS/MS identification and bioinformatics prediction for reporting the anti-inflammatory activity of anti-inflammatory peptides derived from broken rice protein. The study findings revealed that the peptides derived from the byproduct of rice milling could be potentially used as natural anti-inflammatory alternativities.
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Affiliation(s)
- Tingmin Qu
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Shuwen He
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Ce Ni
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Ying Wu
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Zhou Xu
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Mao-Long Chen
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Honghui Li
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Yunhui Cheng
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China.
| | - Li Wen
- Hunan Provincial Key Laboratory of Cytochemistry, School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, 410114, China.
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Seong EH, Gong DS, Shiwakoti S, Adhikari D, Kim HJ, Oak MH. Taxifolin as a Major Bioactive Compound in the Vasorelaxant Effect of Different Pigmented Rice Bran Extracts. Front Pharmacol 2022; 13:799064. [PMID: 35387354 PMCID: PMC8979019 DOI: 10.3389/fphar.2022.799064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/04/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular disease is one of the leading causes of morbidity and mortality in recent years. The intake of polyphenol rich diets has been associated with improved cardiovascular function and reduced cardiovascular risks. Oryza sativa L. is one of the most common cereals worldwide. Rice bran, a byproduct of the rice milling process, contains many bioactive ingredients, including polyphenols, polysaccharides, proteins, and micronutrients. It is also consumed as a healthy diet in the form of rice bran oil and powder in many Asian countries like Japan, South Korea, and India for its several health benefits as a natural antioxidant. Thus, this study evaluated the vasorelaxant effect of ethanolic extracts of brown, green, red, and black rice bran and investigated its underlying vasorelaxant mechanism. Among the four rice bran extracts (RBEs) examined, the red rice bran extract (RRBE) had a strong endothelium-dependent vasorelaxant effect, which was markedly prevented by N-ω-nitro-L-arginine [endothelial nitric oxide synthase (eNOS) inhibitor], wortmannin [phosphoinositide-3 kinase (PI3K) inhibitor], and 1H-[1,2,4]oxadiazole[4,3-alpha]quinoxalin-1-one (inhibitor of guanylate cyclase). Likewise, RRBE induced the phosphorylation of eNOS and Src in cultured endothelial cells, thereby stimulating NO formation. Altogether, these findings propose that RRBE induces endothelium-dependent relaxation, involving at least in part, NO-mediated signaling through the PI3K/eNOS pathway. Further, LC-PDA analysis conducted on the four RBEs also revealed that RRBE highly contained taxifolin, which is an active flavanonol that induces endothelium-dependent vasorelaxation, compared to other RBEs. Subsequently, the underlying mechanism of taxifolin was assessed through vascular reactivity studies with pharmacological inhibitors similar to that of RRBE. These findings deciphered a distinct difference in vasorelaxant effects between RRBE and the other RBEs. We also observed that RRBE induced a potent endothelium-dependent NO-mediated relaxation in coronary artery rings, which involved the Src/PI3K pathway that activates eNOS. Additionally, taxifolin exhibited, at least in part, similar vasoprotective effects of RRBE. Therefore, we propose that RRBE may serve as natural sources of functional phytochemicals that improve cardiovascular diseases associated with disturbed NO production and endothelial dysfunction.
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Affiliation(s)
- Eun-Hee Seong
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Dal-Seong Gong
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Saugat Shiwakoti
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Deepak Adhikari
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Hyun Jung Kim
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Min-Ho Oak
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
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Sato K. Metabolic Fate and Bioavailability of Food-Derived Peptides: Are Normal Peptides Passed through the Intestinal Layer To Exert Biological Effects via Proposed Mechanisms? JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1461-1466. [PMID: 35104135 DOI: 10.1021/acs.jafc.1c07438] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Previous studies have demonstrated that the oral administration of food-derived peptides exerts beneficial effects on human health beyond conventional nutritional functions. In vitro studies have suggested potential mechanisms and active peptides. However, the levels of most food-derived peptides in the body are far lower than the concentrations used in the in vitro assays, with some exceptions. These facts suggest that food-derived peptides might be metabolized into active compounds or function via different mechanisms than the proposed mechanisms. This work briefly discusses the perspectives related to the metabolites of the food-derived peptides in the body.
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Affiliation(s)
- Kenji Sato
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwakecho, Kyoto 606 8502, Japan
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Sapwarobol S, Saphyakhajorn W, Astina J. Biological Functions and Activities of Rice Bran as a Functional Ingredient: A Review. Nutr Metab Insights 2021; 14:11786388211058559. [PMID: 34898989 PMCID: PMC8655829 DOI: 10.1177/11786388211058559] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
Rice bran (RB) is a nutrient-rich by-product of the rice milling process. It consists of pericarp, seed coat, nucellus, and aleurone layer. RB is a rich source of a protein, fat, dietary fibers, vitamins, minerals, and phytochemicals (mainly oryzanols and tocopherols), and is currently mostly used as animal feed. Various studies have revealed the beneficial health effects of RB, which result from its functional components including dietary fiber, rice bran protein, and gamma-oryzanol. The health effects of RB including antidiabetic, lipid-lowering, hypotensive, antioxidant, and anti-inflammatory effects, while its consumption also improves bowel function. These health benefits have drawn increasing attention to RB in food applications and as a nutraceutical product to mitigate metabolic risk factors in humans. This review therefore focuses on RB and its health benefits.
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Affiliation(s)
- Suwimol Sapwarobol
- The Medical Food Research Group, Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Weeraya Saphyakhajorn
- Graduate Program in Food and Nutrition, Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Junaida Astina
- Graduate Program in Food and Nutrition, Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
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Song T, Lv M, Zhou M, Huang M, Zheng L, Zhao M. Soybean-Derived Antihypertensive Peptide LSW (Leu-Ser-Trp) Antagonizes the Damage of Angiotensin II to Vascular Endothelial Cells through the Trans-vesicular Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10536-10549. [PMID: 34460247 DOI: 10.1021/acs.jafc.1c02733] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An emerging inference is that vascular cells transfer their biological cargo to recipient cells by secretion of extracellular vesicles (EVs). This study explored the effects of EVs produced from VSMCs with Ang II (EVs-A) or LSW + Ang II on HUVECs. The EVs-A increase ROS production, activate inflammation, and upregulate the expression of adhesion molecules. Among the EVs-A, miR-22, miR-143, miR-144, and miR-155 were significantly downregulated, while VSMCs pre-incubated with LSW could produce improved EVs. RNA sequencing revealed differential expression of genes associated with endothelial dysfunction, including the TNF signaling pathway, NOD-like receptor signaling pathway, NF-κB signaling pathway, and fluid shear stress and atherosclerosis pathway. Finally, we found that LSW could improve endothelial function by repairing the expression of miRNAs in VSMCs. It also suggests a potential mechanism for the injury action of endogenous peptide Ang II and protective effects of exogenous peptide LSW on vascular endothelial cells.
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Affiliation(s)
- Tianyuan Song
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
| | - Miao Lv
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
| | - Minzhi Zhou
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
| | - Mingtao Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
| | - Lin Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P. R. China
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12
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Mizushige T. Neuromodulatory peptides: Orally active anxiolytic-like and antidepressant-like peptides derived from dietary plant proteins. Peptides 2021; 142:170569. [PMID: 33984426 DOI: 10.1016/j.peptides.2021.170569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/09/2021] [Accepted: 05/03/2021] [Indexed: 12/22/2022]
Abstract
Mental disorders are a severe health problem, and the number of patients is growing worldwide. Increased anxiety and decreased motivation due to excessive mental stress further accelerated the severity of the problem. Enzymatic digestion of food proteins produces bioactive peptides with various physiological functions, some of which exhibit neuromodulatory effects with oral administration. Recently, studies reported that some peptides produced from plant proteins such as soybeans, leaves, and grains exhibit emotional regulatory functions such as strong anxiolytic-like and antidepressant-like effects comparable to pharmaceuticals. Conventionally, researchers investigated bioactive peptides by fractionation of protein hydrolysates and structure-activity relationship. As a novel methodology for analyzing bioactive peptides, the information obtained by peptidomics simultaneous analysis of the digested fractions of proteins using mass spectrometry has been effectively utilized. Some small-sized peptides such as dipeptides and tripeptides released food-derived proteins show emotional regulating effects. Moreover, some middle-sized peptides produced after intestinal digestion may exhibit the emotional regulating effect via the vagus nerve, and the importance of the gut-brain axis is also focused. As the central mechanism of emotional regulation, it has been found that these plant-derived peptides regulated monoamine neurotransmitter signaling and hippocampal neurogenesis.
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Affiliation(s)
- Takafumi Mizushige
- Department of Applied Biological Chemistry, School of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya, Tochigi, 321-8505, Japan.
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13
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Shobako N. Hypotensive peptides derived from plant proteins. Peptides 2021; 142:170573. [PMID: 34023396 DOI: 10.1016/j.peptides.2021.170573] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/29/2021] [Accepted: 05/13/2021] [Indexed: 11/19/2022]
Abstract
Hypertension is a risk factor for arteriosclerosis development and is recognized as a silent killer. Certain processed food materials, digested by protease or through the use of fermentation, have shown exertion of hypotensive effects in human clinical or animal studies, and hypotensive peptides were isolated from them. This review discusses the hypotensive peptides derived from plant proteins, such as grain, soy, vegetables, and seaweeds, and their hypotensive mechanisms. Although angiotensin I-converting enzyme (ACE) inhibition is often noted as one of the mechanisms that may exert antihypertensive effects, ACE inhibitory activity measured by in vitro studies is not associated with the actual hypotensive effect. Thus, this review only highlights the peptide hypotensive effect determined by in vivo studies. This review also discusses the tendency of the amino acid sequence of ACE-inhibitory hypotensive peptides and the possible additional effects of hypotensive peptides independent of ACE inhibition.
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Affiliation(s)
- Naohisa Shobako
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Kyoto, 611-0011, Japan.
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14
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Yu Y, Gaine GK, Zhou L, Zhang J, Wang J, Sun B. The classical and potential novel healthy functions of rice bran protein and its hydrolysates. Crit Rev Food Sci Nutr 2021; 62:8454-8466. [PMID: 34028308 DOI: 10.1080/10408398.2021.1929057] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Rice bran protein (RBP) is a plant protein obtained from rice bran, a byproduct produced during rice milling process. It has been proved to be a high quality protein due to containing all of the essential amino acids and the content closing to the FAO/WHO recommended ideal pattern. Recent studies indicated that RBP and rice bran protein hydrolysates (RBPH) served variety biological functions. In this review, we summarized the classical functions of RBP and RBPH mediating antioxidant activity, chronic diseases prevention (such as antihypertensive effect, anti-diabetic effect, cholesterol-lowering activity), and anti-cancer effect. We also proposed their potential novel functions on anti-obesity effect, attenuating sarcopenia, promoting wound healing. Furthermore, the potential benefit to coronavirus disease 2019 (COVID-19) patients was put forward, which might provide new strategy for development and utilization of RBP and RBPH.
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Affiliation(s)
- Yonghui Yu
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Goutom Kumar Gaine
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Linyue Zhou
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Jingjie Zhang
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China.,Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Jing Wang
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Baoguo Sun
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
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15
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ACE inhibitory peptide KYIPIQ derived from yak milk casein induces nitric oxide production in HUVECs and diffuses via a transcellular mechanism in Caco-2 monolayers. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Song T, Lv M, Zhang L, Zhang X, Song G, Huang M, Zheng L, Zhao M. The Protective Effects of Tripeptides VPP and IPP against Small Extracellular Vesicles from Angiotensin II-Induced Vascular Smooth Muscle Cells Mediating Endothelial Dysfunction in Human Umbilical Vein Endothelial Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:13730-13741. [PMID: 33180478 DOI: 10.1021/acs.jafc.0c05698] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Endothelial dysfunction is a common disorder of vascular homeostasis in hypertension characterized by oxidative stress, malignant migration, inflammatory response, and active adhesion response of endothelial cells. The extracellular vesicles (EVs), a vital participant in vascular cell communication, have been considered responsible for vascular disease progression. However, the potential mechanism of antihypertensive peptides against the EVs-induced endothelial dysfunction is still unclear. In this study, we investigated whether the antihypertensive peptides Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP) ameliorate the effects of EVs from Ang II-induced vascular smooth muscles (VSMCs) on the endothelial dysfunction. The dihydroethidium staining, wound healing assay, 3D cell culture, and co-culture with U937 monocyte were used to investigate the oxidant/antioxidant balance, migration, tube formation, and cell adhesion in EV-induced human umbilical vein endothelial cells. VPP and IPP treatment reduced the level of reactive oxygen species and EV-induced expression of adhesion molecules and restored the ability of tube formation by upregulating endothelial nitric oxide synthase expression. VPP and IPP reduced the protein levels of IL-6 to 227.34 ± 10.56 and 273.84 ± 22.28 pg/mL, of IL-1β protein to 131.56 ± 23.18 and 221.14 ± 13.8 pg/mL, and of MCP-1 to 301.48 ± 19.75 and 428.68 ± 9.59 pg/mL. These results suggested that the VPP and IPP are potential agents that can improve the endothelial dysfunction caused by EVs from Ang II-induced VSMCs.
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Affiliation(s)
- Tianyuan Song
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P.R. China
| | - Miao Lv
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P.R. China
| | - Lixia Zhang
- Institute of Agricultural Products Processing, Henan Academy of Agriculture Sciences, 116 Huayuan Road, Zhengzhou 450002, P.R. China
| | - Xun Zhang
- Institute of Agricultural Products Processing, Henan Academy of Agriculture Sciences, 116 Huayuan Road, Zhengzhou 450002, P.R. China
| | - Guohui Song
- Institute of Agricultural Products Processing, Henan Academy of Agriculture Sciences, 116 Huayuan Road, Zhengzhou 450002, P.R. China
| | - Mingtao Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P.R. China
| | - Lin Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P.R. China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China
- Institute of Agricultural Products Processing, Henan Academy of Agriculture Sciences, 116 Huayuan Road, Zhengzhou 450002, P.R. China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, P.R. China
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17
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Shobako N, Ohinata K. Anti-Hypertensive Effects of Peptides Derived from Rice Bran Protein. Nutrients 2020; 12:nu12103060. [PMID: 33036355 PMCID: PMC7600238 DOI: 10.3390/nu12103060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 09/28/2020] [Accepted: 10/02/2020] [Indexed: 02/08/2023] Open
Abstract
Hypertension is one of the major risk factors for arteriosclerosis. Anti-hypertensive peptides derived from animal proteins, such as milk, eggs and fish, are well studied. Anti-hypertensive peptides have also been identified from plant proteins such as soybeans. Rice bran, a byproduct of white rice polishing, is rich in protein and its high protein efficiency ratio is well known. This review discusses the anti-hypertensive peptides identified from rice bran protein and their mechanisms. In addition, we describe protease-digested rice bran from which functional peptides have not been isolated.
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18
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Song T, Lv M, Sun B, Zheng L, Zhao M. Tripeptides Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP) Regulate the Proliferation and Migration of Vascular Smooth Muscle Cells by Interfering Ang II-Induced Human Umbilical Vein Endothelial Cells Derived EVs Delivering RNAs to VSMCs in the Co-culture Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6628-6637. [PMID: 32407109 DOI: 10.1021/acs.jafc.0c02060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Angiotensin II (Ang II), a vasoactive factor in the renin-angiotensin-aldosterone system (RAAS), can regulate vasoconstriction and promote multiple vascular diseases. In this study, the effects of potent antihypertensive peptide Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP) on the proliferation and migration of vascular smooth muscle cells (VSMCs) by extracellular vesicles (EVs) from vascular endothelial cells (VECs) were studied using a cell co-culture model. The VEC-derived EVs were isolated, characterized, and investigated. The present study demonstrated that the EVs from Ang II-induced VECs could promote proliferation, migration, and inflammatory factors (IL-6 increased to 40.75 ± 4.33 pg/mL and IL-1β increased to 28.62 ± 5.42 pg/mL) generation of VSMCs, VPP and IPP exerted discrepant inhibitory effects on this pathway. The EVs with RNase treatment lost the effects on VSMCs, indicating that the RNAs packed into vesicles may be a critical component. These results implied that VPP and IPP could alleviate Ang II-induced vascular dysfunction by modulating the EV-mediated transmission of RNAs between VECs and VSMCs.
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Affiliation(s)
- Tianyuan Song
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, China
| | - Miao Lv
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, China
| | - Baoguo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University, Beijing 100048, China
| | - Lin Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510640, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University, Beijing 100048, China
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19
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Kashino I, Eguchi M, Miki T, Kochi T, Nanri A, Kabe I, Mizoue T. Prospective Association between Whole Grain Consumption and Hypertension: The Furukawa Nutrition and Health Study. Nutrients 2020; 12:nu12040902. [PMID: 32224906 PMCID: PMC7230178 DOI: 10.3390/nu12040902] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/21/2020] [Accepted: 03/22/2020] [Indexed: 02/06/2023] Open
Abstract
Hypertension has become a major public health issue worldwide. Whole grains contain higher levels and a broader range of nutrients with potential health benefits and may decrease the risk of hypertension. However, no prospective studies have investigated this association in the high-income Asia Pacific region, which has the lowest whole grain intake worldwide. Thus, we examined the prospective association between whole grain consumption and the development of hypertension in Japan. Participants included 944 working Japanese adults aged 19–68 years who had no hypertension at baseline and completed a 3-year follow-up survey. Whole grain consumption was assessed via a self-administered dietary questionnaire. Multivariate logistic regression analysis was carried out to examine the association between whole grain consumption and hypertension, adjusting for potential confounding factors, such as sociodemographic, lifestyle, dietary, and occupational characteristics. After 3 years, 9.4% (86 cases) of the study participants had developed hypertension. More frequent whole grain consumption, classified as an intake frequency of “sometimes or always”, was associated with lower odds of hypertension (multivariate-adjusted odds ratio: 0.36; 95% confidence interval: 0.16–0.83; p for trend = 0.04) compared with no consumption. Consuming more whole grains may decrease the risk of developing hypertension.
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Affiliation(s)
- Ikuko Kashino
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; (T.M.); (A.N.); (T.M.)
- Correspondence: ; Tel.: +81-3-3202-7181; Fax: +81-3-3202-7364
| | - Masafumi Eguchi
- Department of Health Administration, Furukawa Electric Corporation, Tokyo 100-8322, Japan; (M.E.); (T.K.); (I.K.)
| | - Takako Miki
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; (T.M.); (A.N.); (T.M.)
| | - Takeshi Kochi
- Department of Health Administration, Furukawa Electric Corporation, Tokyo 100-8322, Japan; (M.E.); (T.K.); (I.K.)
| | - Akiko Nanri
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; (T.M.); (A.N.); (T.M.)
- Department of Food and Health Sciences, International College of Arts and Sciences, Fukuoka Women’s University, Fukuoka 813-8529, Japan
| | - Isamu Kabe
- Department of Health Administration, Furukawa Electric Corporation, Tokyo 100-8322, Japan; (M.E.); (T.K.); (I.K.)
| | - Tetsuya Mizoue
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; (T.M.); (A.N.); (T.M.)
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20
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A biotechnological approach for the production of branched chain amino acid containing bioactive peptides to improve human health: A review. Food Res Int 2020; 131:109002. [PMID: 32247480 DOI: 10.1016/j.foodres.2020.109002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/21/2019] [Accepted: 01/12/2020] [Indexed: 12/20/2022]
Abstract
Improper nutrition provokes many types of chronic diseases and health problems, which consequently are associated with particularly high costs of treatments. Nowadays, consumer's interest in healthy eating is shifting towards specific foods or food ingredients. As a consequence, bioactive peptides as a promising source of health promoting food additives are currently an intensely debated topic in research. Process design is still on its early stages and is significantly influenced by important preliminary decisions. Thus, parameters like peptide bioactivity within the product, selection of the protein source, enzyme selection for hydrolysis, peptide enrichment method, as well as stability of the peptides within the food matrix and bioavailability are sensitive decision points, which have to be purposefully coordinated, as they are directly linked to amino acid content and structure properties of the peptides. Branched chain amino acids (BCAA) are essential components for humans, possessing various important physiologic functions within the body. Incorporated within peptide sequences, they may induce dual functions, when used as nutraceuticals in functional food, thus preserving the foodstuff and prevent several widespread diseases. Furthermore, there is evidence that consuming this peptide-class can be a nutritional support for elderly people or improve human health to prevent diseases caused by incorrect nutrition. Based on the knowledge about the role of BCAA within various peptide functions, discussed in the review, special attention is given to different approaches for systematic selection of the protein source and enzymes used in hydrolysis, as well as suitable peptide enrichment methods, thereby showing current trends in research.
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21
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Koyama D, Sasai M, Matsumura S, Inoue K, Ohinata K. A milk-derived pentapeptide reduces blood pressure in advanced hypertension in a CCK system-dependent manner. Food Funct 2020; 11:9489-9494. [DOI: 10.1039/d0fo01122c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Orally administered KFWGK exhibits potent and long-lasting antihypertensive effects in SHR with advanced hypertension, at which known hypotensive drugs are sometimes less effective. The minimum effective dose of KFWGK was 5 μg kg−1.
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Affiliation(s)
- Daiki Koyama
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Masaki Sasai
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Shigenobu Matsumura
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Kazuo Inoue
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
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22
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Rice Bran Supplement Containing A Functional Substance, the Novel Peptide Leu-Arg-Ala, has Anti-Hypertensive Effects: A Double-Blind, Randomized, Placebo-Controlled Study. Nutrients 2019; 11:nu11040726. [PMID: 30925824 PMCID: PMC6521331 DOI: 10.3390/nu11040726] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 03/26/2019] [Indexed: 02/07/2023] Open
Abstract
The anti-hypertensive effect of processed rice bran (PRB) was recently reported, for which the novel peptide Leu-Arg-Ala (LRA) was identified as the functional substance. The purpose of this study was to assess the anti-hypertensive effects of a rice bran supplement containing PRB in individuals with high-normal blood pressure (systolic blood pressure (SBP): 130–139 mmHg and/or diastolic blood pressure (DBP): 85–89 mmHg) or grade 1 hypertension (SBP: 140–159 mmHg and/or DBP: 90–99 mmHg). One hundred individuals with high-normal blood pressure or grade 1 hypertension were recruited to participate in this double-blind, randomized, placebo-controlled study. Participants were randomly allocated to the placebo group (n = 50) or the test group (n = 50). Each group took four test tablets (43 μg LRA/day) or four placebo tablets daily. The decrease in blood pressure in the test group compared with the placebo group was the primary outcome. Adverse events were recorded and hematological/urinary parameters measured to determine the safety of the supplement, which was the secondary outcome. In total, 87 participants completed the study. The SBP of the test group at 12 weeks was significantly lower than that of the placebo group (p = 0.0497). No serious adverse events were observed. Daily consumption of a rice bran supplement containing PRB can safely improve mildly elevated blood pressure.
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