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Muñoz-Labrador A, Doyagüez EG, Azcarate S, Julio-Gonzalez C, Barile D, Moreno FJ, Hernandez-Hernandez O. Design Optimization of a Novel Catalytic Approach for Transglucosylated Isomaltooligosaccharides into Dietary Polyols Structures by Leuconostoc mesenteroides Dextransucrase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:21690-21701. [PMID: 39292642 PMCID: PMC11457383 DOI: 10.1021/acs.jafc.4c04222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 08/13/2024] [Accepted: 09/11/2024] [Indexed: 09/20/2024]
Abstract
Polyols, or sugar alcohols, are widely used in the industry as sweeteners and food formulation ingredients, aiming to combat the incidence of diet-related Non-Communicable Diseases. Given the attractive use of Generally Regarded As Safe (GRAS) enzymes in both academia and industry, this study reports on an optimized process to achieve polyols transglucosylation using a dextransucrase enzyme derived from Leuconostoc mesenteroides. These enzyme modifications could lead to the creation of a new generation of glucosylated polyols with isomalto-oligosaccharides (IMOS) structures, potentially offering added functionalities such as prebiotic effects. These reactions were guided by a design of experiment framework, aimed at maximizing the yields of potential new sweeteners. Under the optimized conditions, dextransucrase first cleared the glycosidic bond of sucrose, releasing fructose with the formation of an enzyme-glucosyl covalent intermediate complex. Then, the acceptor substrate (i.e., polyols) is bound to the enzyme-glucosyl intermediate, resulting in the transfer of glucosyl unit to the tested polyols. Structural insights into the reaction products were obtained through nuclear maneic resonance (NMR) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) analyses, which revealed the presence of linear α(1 → 6) glycosidic linkages attached to the polyols, yielding oligosaccharide structures containing from 4 to 10 glucose residues. These new polyols-based oligosaccharides hold promise as innovative prebiotic sweeteners, potentially offering valuable health benefits.
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Affiliation(s)
- Ana Muñoz-Labrador
- Institute
of Food Science Research, CIAL (CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Elisa G. Doyagüez
- Centro
de Química Orgánica “Lora Tamayo” (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Silvana Azcarate
- Consejo
Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CABA (C1425FQB), 1033 Buenos Aires, Argentina
| | | | - Daniela Barile
- Department
of Food Science and Technology, University
of California Davis, Davis, California 95616, United States
| | - F. Javier Moreno
- Institute
of Food Science Research, CIAL (CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Oswaldo Hernandez-Hernandez
- Institute
of Food Science Research, CIAL (CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
- Department
of Food Science and Technology, University
of California Davis, Davis, California 95616, United States
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Guo L, Zhang M, Fei Y, Zhao W. Natural Sweetener, Glycyrrhetinic Acid 3- O-Mono-beta-d-glucuronide, for Postprandial Hyperglycemia Management. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4747-4756. [PMID: 38335161 DOI: 10.1021/acs.jafc.3c07188] [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: 02/12/2024]
Abstract
This study examines the inhibitory effects of a range of sweeteners on α-glucosidase. Our findings revealed that only one natural sweetener, namely, glycyrrhetinic acid 3-O-mono-beta-d-glucuronide (GAMG), derived from licorice, exhibited a mixed-type inhibition against α-glucosidase with a IC50 value of 0.73 ± 0.05 mg/mL. The fluorescence intensity of α-glucosidase was quenched by GAMG in the formation of an α-glucosidase-GAMG complex. GAMG has been shown to induce conformational changes in α-glucosidase, likely through hydrogen bonding, van der Waals force, and alkyl-alkyl interactions with amino acid residues, including Arg 281, Leu 283, Trp 376, Asp 404, Asp 443, Trp 481, Asp 518, Phe 525, Ala 555, and Asp 616. Additional animal validation experiments demonstrated that GAMG slowed starch digestion, thereby attenuating the postprandial glycemic response. Taken together, these findings provide evidence that GAMG is a natural sweetener with potent inhibitory activity that selectively targets α-glucosidase. This study supports the use of GAMG as a natural sweetener, which holds a high biological value and may be beneficial for managing postprandial hyperglycemia.
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Affiliation(s)
- Lichun Guo
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Mengqing Zhang
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Ying Fei
- Wuxi Langke/Suzhou Langbang Biotechnological Co., Ltd., Wuxi, Jiangsu 214122, PR China
| | - Wei Zhao
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
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Xu Q, Liu M, Chao X, Zhang C, Yang H, Chen J, Zhou B. Stevioside Improves Antioxidant Capacity and Intestinal Barrier Function while Attenuating Inflammation and Apoptosis by Regulating the NF-κB/MAPK Pathways in Diquat-Induced Oxidative Stress of IPEC-J2 Cells. Antioxidants (Basel) 2023; 12:antiox12051070. [PMID: 37237936 DOI: 10.3390/antiox12051070] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 05/08/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
As a natural sweetener, stevioside is extracted from Stevia rebaudiana Bertoni and possesses potent antioxidant activity. However, little information is known about its protective role in maintaining the intestinal epithelial cells health under oxidative stress. The aim of this study was to investigate the protective effects and underlying mechanisms of stevioside on alleviating inflammation, apoptosis, and improving antioxidant capacity in intestinal porcine epithelial cells (IPEC-J2) under oxidative stress by diquat. The results demonstrated that the pretreatment with stevioside (250 μM) for 6 h increased cell viability and proliferation and prevented apoptosis induced by diquat at 1000 μM for 6 h in IPEC-J2 cells, compared with the diquat alone-treated cells. Importantly, stevioside pretreatment significantly reduced ROS and MDA production as well as upregulated T-SOD, CAT, and GSH-Px activity. Moreover, it also decreased cell permeability and improved intestinal barrier functions by significantly upregulating the tight junction protein abundances of claudin-1, occludin, and ZO-1. At the same time, stevioside significantly down-regulated the secretion and gene expression of IL-6, IL-8, and TNF-α and decreased the phosphorylation levels of NF-κB, IκB, and ERK1/2 compared with the diquat alone group. Taken together, this study demonstrated that stevioside alleviated diquat-stimulated cytotoxicity, inflammation, and apoptosis in IPEC-J2 cells, protecting cellular barrier integrity and mitigating oxidative stress by interfering with the NF-κB and MAPK signaling pathways.
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Affiliation(s)
- Qinglei Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingzheng Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaohuan Chao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Chunlei Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huan Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiahao Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bo Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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Iftikhar K, Siddique F, Ameer K, Arshad M, Kharal S, Mohamed Ahmed IA, Yasmin Z, Aziz N. Phytochemical profiling, antimicrobial, and antioxidant activities of hydroethanolic extracts of prickly pear ( Opuntia ficus indica) fruit and pulp. Food Sci Nutr 2023; 11:1916-1930. [PMID: 37051353 PMCID: PMC10084978 DOI: 10.1002/fsn3.3226] [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: 10/20/2022] [Revised: 12/28/2022] [Accepted: 12/31/2022] [Indexed: 01/24/2023] Open
Abstract
Phenolic compounds in prickly pear [Opuntia ficus indica (L.) Mill.] are known to contribute to the antioxidant and antimicrobial activities of the prickly pear. The present study aimed to evaluate the antioxidants and in vitro antimicrobial potential in the hydroethanolic extracts of different parts (fruit, cladode, and pulp) of prickly pear. Different polyphenolic compounds were analyzed by using high-performance liquid chromatography. The results indicated that cladode possessed a higher quantity of phenolics compared with that observed in fruit and pulp. The most important phenolic compound in high quantity was gallic acid (66.19 μg/g) in cladode. The 100% aqueous extract of cladode exhibited the highest antioxidant (92%) and antimicrobial activities against Salmonella typhi (3.40 mg/ml), Helicobacter pylori (1.37 mg/ml), Escherichia coli (1.41 mg/ml), and Staphylococcus aureus (1.41 mg/ml). Principal component analysis (PCA) indicated that antioxidant activity and minimum inhibitory concentration (MIC) responses had a significant negative correlation with each other. Overall, the current results provided basic data for choosing prickly pear cladode with high antioxidant capacity for the development and consumption of antioxidant-based alternative medicines and value addition of formulated foods.
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Affiliation(s)
- Khansa Iftikhar
- Institute of Food Science and Nutrition, University of SargodhaSargodhaPakistan
| | - Farzana Siddique
- Institute of Food Science and Nutrition, University of SargodhaSargodhaPakistan
| | - Kashif Ameer
- Institute of Food Science and Nutrition, University of SargodhaSargodhaPakistan
| | - Muhammad Arshad
- Department of ZoologyUniversity of SargodhaSargodhaPunjabPakistan
| | - Sadia Kharal
- Institute of Food Science and Nutrition, University of SargodhaSargodhaPakistan
| | - Isam A. Mohamed Ahmed
- Department of Food Science and Technology, Faculty of AgricultureUniversity of KhartoumShambatSudan
- Department of Food Science and NutritionCollege of Food and Agricultural Sciences, King Saud UniversityRiyadhSaudi Arabia
| | - Zarina Yasmin
- Post Harvest Research CentreAyub Agricultural Research InstituteFaisalabadPakistan
| | - Nida Aziz
- Department of ZoologyUniversity of PunjabLahorePakistan
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Yang H, Ameer K, Chung YB, Min S, Eun J. Optimization of spray drying process for recovery of onion-stevia leaf hot water extract powder using response surface methodology. Food Sci Nutr 2023; 11:1770-1784. [PMID: 37051362 PMCID: PMC10084984 DOI: 10.1002/fsn3.3207] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 01/06/2023] Open
Abstract
It is important to optimize the drying process, along with the concentration of drying aid and the inlet air temperature, in order to obtain products with better physicochemical properties. Onion-stevia leaf hot extract powders were prepared using gum arabic (GA) and whey protein concentrate (WPC). Inlet air temperature and carrier concentrations were optimized using response surface methodology. The drying yield of powdered extracts was 14.39-74.32%, L*- value was 52.66-66.98, bulk density was 0.36-0.75 (g/cm3), moisture content was 2.40-11.57%, water solubility index was 30.32%-97.46%, and mean particle size D[4,3] was 9.13-88.01 (μm). For both GA- and WPC-based powders, optimal inlet air temperatures and carrier concentrations were 148.81 and 144.62°C, and 11.58 and 12.03% (w/v), respectively. GA powders had a higher glass transition temperature (76.49°C) as compared to WPC powders (48.12°C) or maltodextrin as control (55.49°C). Sweetness (5.0/7.0) and overall acceptability (4.3/7.0) scores were higher for GA powders as compared to WPC powders (3.7/7.0 and 3.4/7.0), respectively. Conclusively, GA is a better carrier than whey protein for preparing spray-dried onion-stevia powder that can be used as a natural sweetener.
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Affiliation(s)
- Hae‐Il Yang
- Department of Integrative Food, Bioscience and BiotechnologyChonnam National UniversityGwangjuRepublic of Korea
- Practical Technology Research GroupWorld Institute of KimchiGwangjuRepublic of Korea
| | - Kashif Ameer
- Institute of Food Science and NutritionUniversity of SargodhaSargodhaPakistan
| | - Young Bae Chung
- Practical Technology Research GroupWorld Institute of KimchiGwangjuRepublic of Korea
| | - Sung‐Gi Min
- Practical Technology Research GroupWorld Institute of KimchiGwangjuRepublic of Korea
| | - Jong‐Bang Eun
- Department of Integrative Food, Bioscience and BiotechnologyChonnam National UniversityGwangjuRepublic of Korea
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