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Chang X, Fang X, Yao Y, Xu Z, Wu C, Lu L. Identification and Characterization of Glycosyltransferases Involved in the Biosynthesis of Neodiosmin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4348-4357. [PMID: 38354268 DOI: 10.1021/acs.jafc.3c09308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Glycosylation plays a very important role in plant secondary metabolic modifications. Neodiosmin, identified as diosmetin-7-O-neohesperidoside, not only acts to mitigate bitterness and enhance the flavor of food but also serves as a pivotal metabolite that reinforces plant immunity. Investigating its biosynthetic pathway in plants is crucial for optimizing fruit quality and fortifying plant immune responses. In this study, through analysis of transcriptomic data from Astilbe chinensis, we identified two novel uridine diphosphate (UDP)-glycosyltransferases (UGTs): Ach14791 (AcUGT73C18), responsible for flavonoid 7-O-glycosylation and Ach15849 (AcUGT79B37), involved in flavonoid-7-O-glucoside-2″-O-rhamnosylation. By delving into enzymatic properties and catalytic promiscuity, we developed a biosynthesis route of neodiosmin by establishing a one-pot enzyme-catalyzed cascade reaction. Simultaneously, lonicerin and rhoifolin were also successfully synthesized using the same one-pot dual-enzyme catalytic reaction. Taken together, our findings not only identified two novel UGTs involved in neodiosmin biosynthesis but also provided important biocatalytic components for the microorganism-based biosynthesis of flavonoid-7-O-disaccharide compounds.
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Affiliation(s)
- Xiaosa Chang
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Xueting Fang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Yan Yao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Zhenni Xu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Chaoyan Wu
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Li Lu
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Hubei Hongshan Laboratory, Wuhan 430071, China
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Xiao Z, Wang Y, Liu J, Zhang S, Tan X, Zhao Y, Mao J, Jiang N, Zhou J, Shan Y. Systematic Engineering of Saccharomyces cerevisiae Chassis for Efficient Flavonoid-7- O-Disaccharide Biosynthesis. ACS Synth Biol 2023; 12:2740-2749. [PMID: 37566738 DOI: 10.1021/acssynbio.3c00348] [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] [Indexed: 08/13/2023]
Abstract
Flavonoids are an essential class of secondary metabolites found in plants and possess various nutritional, medicinal, and agricultural properties. However, the poor water solubility of flavonoid aglycones limits their potential applications. To overcome this issue, glycosylation is a promising approach for improving water solubility and bioavailability. In this study, we constructed a flavonoid-7-O-disaccharide biosynthetic pathway with flavonoid aglycones as substrates in Saccharomyces cerevisiae. Subsequently, through metabolic engineering and promoter strategies, we constructed a UDP-rhamnose regeneration system and optimized the UDP-glucose (UDPG) synthetic pathway. The optimized strain produced up to 131.3 mg/L eriocitrin. After this, the chassis cells were applied to other flavonoids, with substrates such as (2S)-naringenin, (2S)-hesperetin, diosmetin, and (2S)-eriodictyol, which resulted in the synthesis of 179.9 mg/L naringin, 276.6 mg/L hesperidin, 249.0 mg/L neohesperidin, 30.4 mg/L diosmin, and 100.7 mg/L neoeriocitrin. To the best of our knowledge, this is the first report on the biosynthesis of flavonoid-7-O-disaccharide.
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Affiliation(s)
- Zhiqiang Xiao
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Yongtong Wang
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Juan Liu
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
- Department of Life Sciences, Chalmers University of Technology, SE412 96, Gothenburg, Sweden
| | - Siqi Zhang
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Xinjia Tan
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Yifei Zhao
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Jiwei Mao
- Department of Life Sciences, Chalmers University of Technology, SE412 96, Gothenburg, Sweden
| | - Ning Jiang
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
| | - Jingwen Zhou
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Yang Shan
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Agriculture Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
- Hunan Key Lab of Fruits & Vegetables Storage, Processing, Quality and Safety, Hunan Agricultural Products Processing Institute, Changsha 410125, China
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3
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Ding HY, Wang TY, Wu JY, Zhang YR, Chang TS. Novel Ganoderma triterpenoid saponins from the biotransformation-guided purification of a commercial Ganoderma extract. J Biosci Bioeng 2023; 135:402-410. [PMID: 36889998 DOI: 10.1016/j.jbiosc.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 03/08/2023]
Abstract
Ganoderma sp. contains high amounts of diverse triterpenoids; however, few triterpenoid saponins could be isolated from the medicinal fungus. To produce novel Ganoderma triterpenoid saponins, biotransformation-guided purification (BGP) process was applied to a commercial Ganoderma extract. The commercial Ganoderma extract was partially separated into three fractions by preparative high-performance liquid chromatography, and the separated fractions were then directly biotransformed by a Bacillus glycosyltransferase (BsUGT489). One of the biotransformed products could be further purified and identified as a novel saponin: ganoderic acid C2 (GAC2)-3-O-β-glucoside by nucleic magnetic resonance (NMR) and mass spectral analyses. Based on the structure of the saponin, the predicted precursor should be the GAC2, which was confirmed to be biotransformed into four saponins, GAC2-3-O-β-glucoside, GAC2-3,15-O-β-diglucoside and two unknown GAC2 monoglucosides, revealed by NMR and mass spectral analyses. GAC2-3-O-β-glucoside and GAC2-3,15-O-β-diglucoside possessed 17-fold and 200-fold higher aqueous solubility than that of GAC2, respectively. In addition, GAC2-3-O-β-glucoside retained the most anti-α-glucosidase activity of GAC2 and was comparable with that of the anti-diabetes drug (acarbose). The present study showed that the BGP process is an efficient strategy to survey novel and bioactive molecules from crude extracts of natural products.
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Affiliation(s)
- Hsiou-Yu Ding
- Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan
| | - Tzi-Yuan Wang
- Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Jiumn-Yih Wu
- Department of Food Science, National Quemoy University, Kinmen 892, Taiwan
| | - Yun-Rong Zhang
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan
| | - Te-Sheng Chang
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan.
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4
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Tian Y, Xu W, Guang C, Zhang W, Mu W. Glycosylation of flavonoids by sucrose- and starch-utilizing glycoside hydrolases: A practical approach to enhance glycodiversification. Crit Rev Food Sci Nutr 2023:1-18. [PMID: 36876518 DOI: 10.1080/10408398.2023.2185201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Flavonoids are ubiquitous and diverse in plants and inseparable from the human diet. However, in terms of human health, their further research and application in functional food and pharmaceutical industries are hindered by their low water solubility. Therefore, flavonoid glycosylation has recently attracted research attention because it can modulate the physicochemical and biochemical properties of flavonoids. This review represents a comprehensive overview of the O-glycosylation of flavonoids catalyzed by sucrose- and starch-utilizing glycoside hydrolases (GHs). The characteristics of this feasible biosynthesis approach are systematically summarized, including catalytic mechanism, specificity, reaction conditions, and yields of the enzymatic reaction, as well as the physicochemical properties and bioactivities of the product flavonoid glycosides. The cheap glycosyl donor substrates and high yields undoubtedly make it a practical flavonoid modification approach to enhance glycodiversification.
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Affiliation(s)
- Yuqing Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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5
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Li R, Wang Z, Kong KW, Xiang P, He X, Zhang X. Probiotic fermentation improves the bioactivities and bioaccessibility of polyphenols in Dendrobium officinale under in vitro simulated gastrointestinal digestion and fecal fermentation. Front Nutr 2022; 9:1005912. [PMID: 36159468 PMCID: PMC9491275 DOI: 10.3389/fnut.2022.1005912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/16/2022] [Indexed: 11/13/2022] Open
Abstract
The objective of the research was to investigate and compare the bioactivities and bioaccessibility of the polyphenols (PPs) from Dendrobium officinale (DO) and probiotic fermented Dendrobium officinale (FDO), by using in vitro simulated digestion model under oral, gastric and intestinal phases as well as colonic fermentation. The results indicated that FDO possessed significantly higher total phenolic contents (TPC) and total flavonoid contents (TFC) than DO, and they were released most in the intestinal digestion phase with 6.96 ± 0.99 mg GAE/g DE and 10.70 ± 1.31 mg RE/g DE, respectively. Using high-performance liquid chromatography (HPLC), a total of six phenolic acids and four flavonoids were detected. In the intestinal phase, syringaldehyde and ferulic acid were major released by DO, whereas they were p-hydroxybenzoic acid, vanillic acid, and syringic acid for FDO. However, apigenin and scutellarin were sustained throughout the digestion whether DO or FDO. As the digestive process progressed, their antioxidant ability, α-amylase and α-glucosidase inhibitory activities were increased, and FDO was overall substantially stronger in these activities than that of DO. Both DO and FDO could reduce pH values in the colonic fermentation system, and enhance the contents of short-chain fatty acids, but there were no significantly different between them. The results of the 16S rRNA gene sequence analysis showed that both DO and FDO could alter intestinal microbial diversity during in vitro colonic fermentation. In particular, after colonic fermentation for 24 h, FDO could significantly improve the ratio of Firmicutes to Bacteroidetes, and enrich the abundancy of Enterococcus and Bifidobacterium (p < 0.05), which was most likely through the carbohydrate metabolism signal pathway. Taken together, the PPs from DO and FDO had good potential for antioxidant and modulation of gut bacterial flora during the digestive processes, and FDO had better bioactivities and bioaccessibility. This study could provide scientific data and novel insights for Dendrobium officinale to be developed as functional foods.
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Affiliation(s)
- Rurui Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, China
- College of Life Science, Southwest Forestry University, Kunming, China
| | - Zhenxing Wang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, China
- College of Life Science, Southwest Forestry University, Kunming, China
| | - Kin Weng Kong
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Ping Xiang
- Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, China
| | - Xiahong He
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, China
- College of Horticulture and Landscape, Southwest Forestry University, Kunming, China
- *Correspondence: Xiahong He
| | - Xuechun Zhang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, China
- College of Life Science, Southwest Forestry University, Kunming, China
- Xuechun Zhang
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6
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Su Y, Tao L, Zhang X, Sheng X, Li Q, Fei W, Yin T, Kang A, Aa J, Wang G. Non-targeted characteristic filter analysis combined with in silico prediction strategies to identify the chemical components and in vivo metabolites of Dalitong Granules by UPLC-Q-TOF/MS/MS. J Pharm Biomed Anal 2022; 222:115086. [DOI: 10.1016/j.jpba.2022.115086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/29/2022]
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7
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Chiang JH, Hua XY, Yu AHM, Peh EWY, See E, Jeyakumar Henry C. A Review on Buckwheat and Its Hypoglycemic Bioactive Components in Food Systems. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2103706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Jie Hong Chiang
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Xin Yi Hua
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Ashley Hui Min Yu
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Elaine Wan Yi Peh
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
| | - E’Ein See
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Christiani Jeyakumar Henry
- Clinical Nutrition Research Centre, Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology and Research (A*STAR), Singapore
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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8
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Hu Y, Ma C, Liu J, Bai G, Guo S, Wang T. Synthesis, Physical Properties, and In Vitro-Simulated Gastrointestinal Digestion of Hydrophilic β-Sitosterol Sugar Esters. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8458-8468. [PMID: 35786884 DOI: 10.1021/acs.jafc.2c01847] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrophilic β-sitosterol sugar esters were synthesized by a two-step biocatalytic approach using β-sitosterol vinyl adipate as an intermediate. The maximum conversion (above 90%) of β-sitosterol vinyl adipate was achieved using the saccharides glucose, sucrose, and raffinose. The chemical structure of the synthesized esters was confirmed by various techniques. The investigation of physical properties revealed that β-sitosterol sugar esters had enhanced water solubility (3.0-8.0 mM at 35 °C), reduced crystallinity, and high wettability. Their lyotropic liquid crystal properties were observed by polarized light microscopy. Furthermore, β-sitosterol sugar esters could be hydrolyzed into β-sitosterol adipate under simulated intestinal conditions at a low rate (2.83-18.14%). Most β-sitosterol sugar esters probably entered into intestinal bile salt micelles with ester bonds intact and showed up to 10-fold higher in vitro bioaccessibility than free β-sitosterol in non-fat systems. The excellent physical and functional characteristics of β-sitosterol sugar esters suggested their great potential application in the food industry.
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Affiliation(s)
- Yuyuan Hu
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
| | - Chuanguo Ma
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
| | - Jun Liu
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
- Institute of Grain and Oil Standardization, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
| | - Ge Bai
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
| | - Shujing Guo
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
| | - Tong Wang
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, PR China
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Phenolic compounds in common buckwheat sprouts: composition, isolation, analysis and bioactivities. Food Sci Biotechnol 2022; 31:935-956. [PMID: 35873372 PMCID: PMC9300812 DOI: 10.1007/s10068-022-01056-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 12/14/2022] Open
Abstract
Phenolic compounds in common buckwheat sprouts (CBSs) have gained research interest because of their multiple health benefits. Phenolic acids, flavanones, flavonols, flavan-3-ols, and anthocyanins are important bioactive components of CBS that exhibit biological activities, including anti-inflammatory, antioxidant, anti-proliferative, and immunomodulatory effects. The isolation and quantitative and qualitative analyses of these phenolic compounds require effective and appropriate extraction and analytical methods. The most recent analytical method developed for determining the phenolic profile is HPLC coupled with a UV-visible detector and/or MS. This review highlights the extraction, purification, analysis, and bioactive properties of phenolic compounds from CBS described in the literature.
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Uchiyama H, Kadota K, Tozuka Y. A review of transglycosylated compounds as food additives to enhance the solubility and oral absorption of hydrophobic compounds in nutraceuticals and pharmaceuticals. Crit Rev Food Sci Nutr 2022; 63:11226-11243. [PMID: 35757865 DOI: 10.1080/10408398.2022.2092056] [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] [Indexed: 11/03/2022]
Abstract
Transglycosylation has been used to modify the physicochemical properties of original compounds. As a result, transglycosylated compounds can form molecular aggregates in size ranges of a few nanometers in an aqueous medium when their concentrations exceed a specific level. Incorporating these hydrophobic compounds has been observed to enhance the solubility of hydrophobic compounds into aggregate structures. Thus, this review introduces four transglycosylated compounds as food additives that can enhance the solubility and oral absorption of hydrophobic compounds. Here, transglycosylated hesperidin, transglycosylated rutin, transglycosylated naringin, and transglycosylated stevia are the focus as representative substances. Significantly, we observed that amorphous formations containing hydrophobic compounds with transglycosylated compounds improved solubility and oral absorption compared to untreated hydrophobic compounds. Moreover, combining transglycosylated compounds with hydrophilic polymers or surfactants enhanced the solubilizing effects on hydrophobic compounds. Furthermore, the enhanced solubility of hydrophobic compounds improved their oral absorption. Transglycosylated compounds also influenced nanoparticle preparation of hydrophobic compounds as a dispersant. This study demonstrated the benefits of transglycosylated compounds in developing supplements and nutraceuticals of hydrophobic compounds with poor aqueous solubility.
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Affiliation(s)
- Hiromasa Uchiyama
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Kazunori Kadota
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Yuichi Tozuka
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
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Enzymatic Synthesis of Novel and Highly Soluble Puerarin Glucoside by Deinococcus geothermalis Amylosucrase. Molecules 2022; 27:molecules27134074. [PMID: 35807322 PMCID: PMC9268652 DOI: 10.3390/molecules27134074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/16/2022] [Accepted: 06/22/2022] [Indexed: 02/03/2023] Open
Abstract
Puerarin (daidzein-8-C-glucoside) is an isoflavone isolated from several leguminous plants of the genus Pueraria. Puerarin possesses several pharmacological properties; however, the poor solubility of puerarin limits its applications. To resolve this poor solubility, Deinococcus geothermalis amylosucrase (DgAS) was used to modify puerarin into more soluble derivatives. The results showed that DgAS could biotransform puerarin into a novel compound: puerarin-4′-O-α-glucoside. The biotransformation reaction was manipulated at different temperatures, pH values, sucrose concentrations, reaction times, and enzyme concentrations. The results showed that the optimal reaction condition was biotransformed by 200 μg/mL DgAS with 20% (w/v) sucrose at pH 6 and incubated at 40 °C for 48 h, and the optimal production yield was 35.1%. Puerarin-4′-O-α-glucoside showed 129-fold higher solubility than that of puerarin and, thus, could be further applied for pharmacological use in the future.
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12
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Human C, De Beer D, Bowles S, Joubert E. Effect of electrospraying conditions on the properties of aspalathin‐Eudragit S100 nanoparticles and assessment of orogastrointestinal stability and membrane permeability. FOOD FRONTIERS 2022. [DOI: 10.1002/fft2.131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Chantelle Human
- Plant Bioactives Group, Post‐Harvest and Agro‐Processing Technologies Agricultural Research Council Infruitec‐Nietvoorbij Stellenbosch South Africa
| | - Dalene De Beer
- Plant Bioactives Group, Post‐Harvest and Agro‐Processing Technologies Agricultural Research Council Infruitec‐Nietvoorbij Stellenbosch South Africa
- Department of Food Science Stellenbosch University Stellenbosch South Africa
| | - Sandra Bowles
- Biomedical Research and Innovation Platform South African Medical Research Council Bellville South Africa
- Department of Ophthalmology University of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - Elizabeth Joubert
- Plant Bioactives Group, Post‐Harvest and Agro‐Processing Technologies Agricultural Research Council Infruitec‐Nietvoorbij Stellenbosch South Africa
- Department of Food Science Stellenbosch University Stellenbosch South Africa
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13
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Production of New Isoflavone Diglucosides from Glycosylation of 8-Hydroxydaidzein by Deinococcus geothermalis Amylosucrase. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7040232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
8-Hydroxydaidzein (8-OHDe) is a non-natural isoflavone polyphenol isolated from fermented soybean foods. 8-OHDe exhibits a wide range of pharmaceutical activities. However, both the poor solubility and instability of 8-OHDe limit its applications. To resolve the limitations of 8-OHDe, Deinococcus geothermalis amylosucrase (DgAS) has previously been used to glycosylate 8-OHDe to produce soluble and stable 8-OHDe-7-O-α-glucopyranoside (8-OHDe-7-G) in a 0.5 h reaction time. In this study, we aimed to use DgAS and an extended reaction time to produce 8-OHDe diglucosides. At least three 8-OHDe derivatives were produced after a 24 h reaction time, and two major products were successfully purified and identified as new compounds: 8-OHDe-7-O-[α-glucopyranosyl-(1→6)-α-glucopyranoside] (8-OHDe-7-G2) and 8-OHDe-7,4′-O-α-diglucopyranoside (8-OHDe-7-G-4′-G). 8-OHDe-7-G-4′-G showed a 4619-fold greater aqueous solubility than 8-OHDe. In addition, over 92% of the 8-OHDe diglucosides were stable after 96 h, while only 10% of the 8-OHDe could be detected after being subjected to the same conditions. The two stable 8-OHDe diglucoside derivatives have the potential for pharmacological usage in the future.
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14
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Enzymatic Synthesis of Novel Vitexin Glucosides. Molecules 2021; 26:molecules26206274. [PMID: 34684855 PMCID: PMC8539612 DOI: 10.3390/molecules26206274] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 01/20/2023] Open
Abstract
Vitexin is a C-glucoside flavone that exhibits a wide range of pharmaceutical activities. However, the poor solubility of vitexin limits its applications. To resolve this limitation, two glycoside hydrolases (GHs) and four glycosyltransferases (GTs) were assayed for glycosylation activity toward vitexin. The results showed that BtGT_16345 from the Bacillus thuringiensis GA A07 strain possessed the highest glycosylation activity, catalyzing the conversion of vitexin into new compounds, vitexin-4'-O-β-glucoside (1) and vitexin-5-O-β-glucoside (2), which showed greater aqueous solubility than vitexin. To our knowledge, this is the first report of vitexin glycosylation. Based on the multiple bioactivities of vitexin, the two highly soluble vitexin derivatives might have high potential for pharmacological usage in the future.
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