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Hans N, Solanki D, Nagpal T, Amir H, Naik S, Malik A. Process optimization and characterization of hydrolysate from underutilized brown macroalgae (Padina tetrastromatica) after fucoidan extraction through subcritical water hydrolysis. J Environ Manage 2024; 349:119497. [PMID: 37951112 DOI: 10.1016/j.jenvman.2023.119497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 10/28/2023] [Accepted: 10/28/2023] [Indexed: 11/13/2023]
Abstract
The growing demand for macroalgal biomass as a source of proteins, peptides, and amino acids is garnering attention for their biological and functional properties. This study depicts the use of emerging green techniques, i.e. subcritical water, to hydrolyze protein from Padina tetrastromatica. The biomass was treated with subcritical water at varying temperatures between 100 and 220 °C for 10-40 min at a biomass to water proportion of 1:50 (w/v) and pressure of 4.0 MPa. The optimum conditions for recovering the maximum protein (127.2 ± 1.1 mg g-1), free amino acids (58.4 ± 1.0 mg g-1), highest degree of hydrolysis (58.8 ± 1.2 %) and low molecular weight peptides (<650 Da) were found to be 220 °C for 10 min. The amino acid profiling of the hydrolysate revealed that it contains 45 % essential amino acids, with the highest concentration of methionine (0.18 %), isoleucine (0.12 %) and leucine (0.10 %). It was found that the hydrolysate contains phenolics (23.9 ± 1.4 mg GAE g-1) and flavonoids (1.23 ± 0.1 mg QE g-1), which are largely responsible for antioxidant activity. The hydrolysate effectively inhibits acetylcholinesterase and α-amylase in vitro, with IC50 values of 17.9 ± 0.1 mg mL-1 and 16.0 ± 0.5 %, respectively, which can help prevent Alzheimer's disease and diabetes mellitus. Consequently, this study reveals that utilizing eco-friendly subcritical water hydrolysis method, 79 % of the protein was recovered from P. tetrastromatica, which might be an effective source of bioactive peptides in various nutraceutical, pharmaceutical and cosmeceutical applications.
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Affiliation(s)
- Nidhi Hans
- Supercritical Fluid Extraction Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Divyang Solanki
- School of Agriculture and Food Science, The University of Queensland, Brisbane, 4072, Australia.
| | - Tanya Nagpal
- Food Customization and Research Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Hirah Amir
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Satyanarayan Naik
- Supercritical Fluid Extraction Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Anushree Malik
- Applied Microbiology Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India.
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Nagpal T, Yadav V, Khare SK, Siddhanta S, Sahu JK. Monitoring the lipid oxidation and fatty acid profile of oil using algorithm-assisted surface-enhanced Raman spectroscopy. Food Chem 2023; 428:136746. [PMID: 37421667 DOI: 10.1016/j.foodchem.2023.136746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 07/10/2023]
Abstract
Deep-fat frying of food develops lipid oxidation products that deteriorate oil and pose a health risk. This necessitates the development of a rapid and accurate oil quality and safety detection technique. Herein, surface-enhanced Raman spectroscopy (SERS) and sophisticated chemometric techniques were used for rapid and label-free determination of peroxide value (PV) and fatty acid composition of oil in-situ. In the study, plasmon-tuned and biocompatible Ag@Au core-shell nanoparticle-based SERS substrates were used to obtain optimum enhancement despite matrix interference to efficiently detect the oil components. The potent combination of SERS and the Artificial Neural Network (ANN) method could determine the fatty acid profile and PV with upto 99% accuracy. Moreover, the SERS-ANN method could quantify the low level of trans fats, i.e., < 2%, with 97% accuracy. Therefore, the developed algorithm-assisted SERS system enabled the sleek and rapid monitoring and on-site detection of oil oxidation.
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Affiliation(s)
- Tanya Nagpal
- Nanoscopic Imaging and Sensing Lab, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110 016, India; Food Customization and Research Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110 016, India; Enzyme and Microbial Biochemistry Lab, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110 016, India
| | - Vikas Yadav
- Nanoscopic Imaging and Sensing Lab, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110 016, India
| | - Sunil K Khare
- Enzyme and Microbial Biochemistry Lab, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110 016, India
| | - Soumik Siddhanta
- Nanoscopic Imaging and Sensing Lab, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110 016, India.
| | - Jatindra K Sahu
- Food Customization and Research Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110 016, India.
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Nagpal T, Alam S, Khare SK, Satya S, Chaturvedi S, Sahu JK. Effect of Psidium guajava leaves extracts on thermo-lipid oxidation and Maillard pathway born food toxicant acrylamide in Indian staple food. J Food Sci Technol 2022; 59:86-94. [PMID: 35068554 PMCID: PMC8758828 DOI: 10.1007/s13197-021-04984-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/07/2021] [Accepted: 01/13/2021] [Indexed: 01/03/2023]
Abstract
Deep frying of food is a common practice that leads to the formation of lipid oxidation products. These lipid oxidation products have a role in the Maillard reaction, which ultimately leads to the formation of cancer-causing and neurotoxic substance acrylamide. In this regard, the Psidium guajava leaves extract-treated sunflower oil on oxidative stability and acrylamide content in pooris a popular deep-fried staple food in India were studied and compared with synthetic antioxidant butylated hydroxytoluene (BHT) till four frying cycles. P. guajava leaves contain 173.33 ± 1.95 mg GAE/g extract total phenolic content and 20.43 ± 0.25 mg RUE/g extract total flavonoid content. Some of the phytochemicals in the extract were identified and quantified by HPTLC. P. guajava leaves extract (1 g) contained 0.039 mg gallic acid, 0.196 mg rutin, 0.021 mg naringenin, 0.059 mg ferulic acid. The IC50 values for guava leaves extract, BHT, and ascorbic acid were 61.4, 30.4, 26.6 µg/mL, respectively. The peroxide and p-anisidine values indicated that P. guajava leaves extract inhibited lipid oxidation and provided oxidative stability. Pooris fried in P. guajava leaves extract-treated, BHT treated sunflower oil contained a lower acrylamide than pooris fried in control sunflower oil. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at (10.1007/s13197-021-04984-y).
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Affiliation(s)
- Tanya Nagpal
- Food Customization Research Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Shahenvaz Alam
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Sunil K Khare
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Santosh Satya
- Food Customization Research Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Shivani Chaturvedi
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Jatindra K Sahu
- Food Customization Research Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
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Nagpal T, Sahu JK, Khare SK, Bashir K, Jan K. Trans fatty acids in food: A review on dietary intake, health impact, regulations and alternatives. J Food Sci 2021; 86:5159-5174. [PMID: 34812504 DOI: 10.1111/1750-3841.15977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 10/12/2021] [Accepted: 10/18/2021] [Indexed: 01/20/2023]
Abstract
Trans fats are desired by the edible oil industry as they impart firmness, plasticity, and oxidative stability to oil. However, clinical trials have demonstrated the adverse effects of trans fats in food on human health and nutrition. Regulatory actions have been taken up by government and non-government bodies worldwide to eliminate the presence of trans fats in the food supply. The World Health Organization (WHO) has launched a "REPLACE" action plan to eliminate trans-fat from the global food industry by 2023. A few enabling technologies are developed to mitigate trans fats namely, trait-enhanced oils, modification in the hydrogenation process, interesterification, fractionation, blending, and oleogelation. Some of them have the drawback of replacing trans-fat with saturated fats. Interesterification and oleogelation are in-trend techniques with excellent potential in replacing trans fats without compromising the desired functionality and nutritional quality attributes. This review presents an overview of trans fatty acid for example, its dietary intake in food products, possible adverse health impact, regulations, and approaches to reduce the usage of trans fats for food application. PRACTICAL APPLICATION: The requirement for the replacement of trans fatty acids (TFAs) in food supply globally has challenged the food industry to find a novel substitute for trans fats without compromising the desired functionality and nutritional property. This review presents detailed background on trans fats, their health impacts and current trends of reformulation of oils and fats to mitigate their presence in food supply chains. Information compiled in this paper will help food scientists and technologists, chemists, food processors, and retailers as there is an urgent need to find novel technologies and substitutes to replace trans fats in processed foods.
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Affiliation(s)
- Tanya Nagpal
- Food Customization Research Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India.,Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Jatindra K Sahu
- Food Customization Research Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Sunil K Khare
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Khalid Bashir
- Department of Food Technology, School of Interdisciplinary Sciences and Technology, Hamdard University (Deemed to be University), New Delhi, India
| | - Kulsum Jan
- Department of Food Technology, School of Interdisciplinary Sciences and Technology, Hamdard University (Deemed to be University), New Delhi, India
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Alam S, Nagpal T, Singhal R, Kumar Khare S. Immobilization of L-asparaginase on magnetic nanoparticles: Kinetics and functional characterization and applications. Bioresour Technol 2021; 339:125599. [PMID: 34303095 DOI: 10.1016/j.biortech.2021.125599] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
L-asparaginase shows great potential as a food enzyme to reduce acrylamide formation in fried and baked products. But for food applications, enzymes must be stable at high temperatures and have higher catalytic efficiency. These desirable characteristics are conferred by the immobilization of enzymes on a suitable matrix. The present study aimed to immobilize the L-asparaginase enzyme on magnetic nanoparticles to reduce acrylamide content in the food system. Immobilized preparations were characterized using SEM, TEM, FTIR, UV-spectrometry, and XRD diffraction analyses. These nanoparticles enhanced the thermal stability of the enzyme up to four-fold at 70 °C compared to the free enzyme. Kinetic parameters exhibited an increase in Vmax, Km, and catalytic efficiency by ~ 38% than the free counterpart. The immobilized preparations were reusable for up to five cycles. Moreover, their application in the pre-treatment coupled with blanching of potato chips led to a significant reduction (greater than 95%) of acrylamide formation.
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Affiliation(s)
- Shahenvaz Alam
- Enzyme and Microbial Biochemistry Laboratory, Chemistry Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
| | - Tanya Nagpal
- Enzyme and Microbial Biochemistry Laboratory, Chemistry Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
| | - Rekha Singhal
- Food and Engineering Department, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Sunil Kumar Khare
- Enzyme and Microbial Biochemistry Laboratory, Chemistry Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India.
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Nawange SR, Singh SM, Naidu J, Jain S, Nagpal T, Behrani DS, Mellado E, Tudela JLR. Zygomycosis caused by Rhizopus microsporus and Rhizopus oryzae in Madhya Pradesh (M.P.) Central India: a report of two cases. Mycopathologia 2012; 174:171-6. [PMID: 22437261 DOI: 10.1007/s11046-012-9532-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 02/18/2012] [Indexed: 11/30/2022]
Abstract
Zygomycosis encompasses infections due to two distinct orders of fungi, Mucorales and Entomophthorales. With rare exception, Entomophthorales are restricted to tropical areas. By contrast, mucorales are ubiquitous opportunistic fungi, which play a crucial part in the natural decay process. In human pathology, they may be opportunistic agents and be responsible for rare infection called (Mucormycosis) zygomycosis. We report two cases of zygomycosis from Madhya Pradesh, Central India, one caused by Rhizopus oryzae in a diabetic patient and another caused by Rhizopus microsporus in an apparently healthy patient. The cases were diagnosed by direct microscopy, histopathological examination and culture. Both the patients were successfully treated with liposomal amphotericin B. Rhizopus microsporus is, for the first time reported from Madhya Pradesh, India, causing rhino-maxillary orbital zygomycosis.
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Affiliation(s)
- Shesh R Nawange
- Department of Biological Sciences, Rani Durgavati University, Jabalpur, Madhya Pradesh, India.
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