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Guo J, Hu M, Yang M, Cao H, Li H, Zhu J, Li S, Zhang J. Inhibition mechanism of theaflavins on matrix metalloproteinase-2: inhibition kinetics, multispectral analysis, molecular docking and molecular dynamics simulation. Food Funct 2024. [PMID: 38910519 DOI: 10.1039/d4fo01620c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Dental caries is a chronic and destructive disease and matrix metalloproteinase-2 (MMP-2) plays a major role in caries. The inhibitory mechanisms of theaflavins [theaflavin (TF1), theaflavin-3-gallate (TF2A), theaflavin-3'-gallate (TF2B), and theaflavin-3,3'-digallate (TF3)] on MMP-2 were investigated using techniques such as enzyme inhibition kinetics, multi-spectral methods, molecular docking, and molecular dynamics simulations. The results showed that TF1, TF2A, TF2B, and TF3 all competitively and reversibly inhibited MMP-2 activity. Fluorescence spectra and molecular docking indicated that four theaflavins spontaneously bind to MMP-2 through noncovalent interactions, driven by hydrogen bonds and hydrophobic interactions, constituting a static quenching mechanism and resulting in an altered tryptophan residue environment around MMP-2. Molecular dynamic simulations demonstrated that four theaflavins can form stable, compact complexes with MMP-2. In addition, the order of theaflavins' ability to inhibit MMP-2 was found to be TF1 > TF2B > TF2A > TF3. Interestingly, the order of binding capacity between MMP-2 and TF1, TF2A, TF2B, and TF3 was consistent with the order of inhibitory capacity, and was opposite to the order of steric hindrance of theaflavins. This may be due to the narrow space of the active pocket of MMP-2, and the smaller the steric hindrance of theaflavins, the easier it is to enter the active pocket and bind to MMP-2. This study provided novel insights into theaflavins as functional components in the exploration of natural MMP-2 inhibitors.
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Affiliation(s)
- Jing Guo
- Department of Dental General and Emergency, The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, No. 688 Honggu North Road, Honggutan District, Nanchang 330038, People's Republic of China.
- Jiangxi Province Key Laboratory of Oral Biomedicine, People's Republic of China
- Jiangxi Province Clinical Research Center for Oral Diseases, People's Republic of China
| | - Mengna Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
| | - Mingqi Yang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
| | - Huang Cao
- Department of Dental General and Emergency, The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, No. 688 Honggu North Road, Honggutan District, Nanchang 330038, People's Republic of China.
- Jiangxi Province Key Laboratory of Oral Biomedicine, People's Republic of China
- Jiangxi Province Clinical Research Center for Oral Diseases, People's Republic of China
| | - Hongan Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
| | - Jiayu Zhu
- Department of Dental General and Emergency, The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, No. 688 Honggu North Road, Honggutan District, Nanchang 330038, People's Republic of China.
- Jiangxi Province Key Laboratory of Oral Biomedicine, People's Republic of China
- Jiangxi Province Clinical Research Center for Oral Diseases, People's Republic of China
| | - Shuang Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
| | - Jinsheng Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
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Li J, Qin CF, Chen ND. Evaluation of antioxidant, antidiabetic and antiobesity potential of phenylpropanoids (PPs): Structure-activity relationship and insight into action mechanisms against dual digestive enzymes by comprehensive technologies. Bioorg Chem 2024; 146:107290. [PMID: 38507999 DOI: 10.1016/j.bioorg.2024.107290] [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: 01/23/2024] [Revised: 03/03/2024] [Accepted: 03/14/2024] [Indexed: 03/22/2024]
Abstract
Phenylpropanoids (PPs), a group of natural compounds characterized by one or more C6-C3 units, have exhibited considerable potential in addressing metabolic disease. However, the comprehensive investigation on the relationship of compound structures and involved activity, along with the action mechanisms on the drug target is absent. This study aimed to evaluate the antioxidant and inhibitory activities of 16 PPs against two digestive enzymes, including α-glucosidase and pancreatic lipase, explore the structure-activity relationships and elucidate the mechanisms underlying enzyme inhibition. The findings revealed the similarities in the rules governing antioxidant and enzyme inhibitory activities of PPs. Specifically, the introduction of hydroxyl groups generally exerted positive effects on the activities, while the further methoxylation and glycosylation were observed to be unfavorable. Among the studied PPs, esculetin exhibited the most potent antioxidant activity and dual enzymes inhibition potential, displaying IC50 values of 0.017 and 0.0428 mM for DPPH and ABTS radicals scavenging, as well as 1.36 and 6.67 mM for α-glucosidase and lipase inhibition, respectively. Quantification analysis indicated esculetin bound on both α-glucosidase and lipase successfully by a mixed-type mode. Further analyses by UV-Vis, FT-IR, fluorescence spectra, surface hydrophobicity, SEM, and molecular docking elucidated that esculetin could bind on the catalytic or non-catalytic sites of enzymes to form complex, impacting the normal spatial conformation for hydrolyzing the substrate, thus exhibiting the weakened activity. These results may shed light on the utilization value of natural PPs for the management of hyperglycemia and hyperlipemia, and afford the theoretical basis for designing drugs with stronger inhibition against the dual digestive enzymes based on esculetin.
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Affiliation(s)
- Jiao Li
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China; Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resource, Lu'an 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China
| | - Chao-Feng Qin
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China; Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resource, Lu'an 237012, China; College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China
| | - Nai-Dong Chen
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China; Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resource, Lu'an 237012, China; College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an 237012, China.
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Yuan Y, Chai Z, Zheng Y, Ren Y, Ye X, Kong X, Tian J. Effect of hawthorn polyphenol extracts on the physicochemical properties and digestibility of corn starch. J Food Sci 2024; 89:1337-1346. [PMID: 38258896 DOI: 10.1111/1750-3841.16932] [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: 07/07/2023] [Revised: 12/11/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024]
Abstract
To investigate the effect of hawthorn polyphenols on the physicochemical properties and digestibility of corn starch, different proportions (1%, 2%, 3%, and 4% [w/w]) of hawthorn polyphenol extracts (HPEs) were mixed with corn starch, and their physicochemical properties and digestive properties were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Rapid Visco Analysis, differential scanning calorimetry, and in vitro/in vivo analysis. Results indicated that small V-type crystal starch tended to be formed in the samples, and the addition of HPEs reduced the viscosity, prolonged the gelatinization temperature of corn starch, and increased the proportion of slowly digestible starch and resistant starch of the corn starch, which accounted for 36.32% ± 1.05% and 33.32% ± 4.07%, respectively. Compared with the raw corn starch, the postprandial blood glucose of mice that were administered the hawthorn polyphenols decreased significantly: the blood glucose peak (30 min) decreased from 14.30 ± 1.52 to 11.77 ± 1.21 mmol/L. Our study might provide some basic theoretical support for the application of hawthorn polyphenols in healthy starchy food processing.
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Affiliation(s)
- Ying Yuan
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Ziqi Chai
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
- College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, China
| | - Yuxue Zheng
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Yanming Ren
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
- Ningbo Research Institute, Zhejiang University, Ningbo, China
- Zhongyuan Institute, Zhejiang University, Zhengzhou, China
| | - Xiangli Kong
- College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, China
| | - Jinhu Tian
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
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Shi M, Chen Z, Gong H, Peng Z, Sun Q, Luo K, Wu B, Wen C, Lin W. Luteolin, a flavone ingredient: Anticancer mechanisms, combined medication strategy, pharmacokinetics, clinical trials, and pharmaceutical researches. Phytother Res 2024; 38:880-911. [PMID: 38088265 DOI: 10.1002/ptr.8066] [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: 08/16/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 02/15/2024]
Abstract
Current pharmaceutical research is energetically excavating the pharmacotherapeutic role of herb-derived ingredients in multiple malignancies' targeting. Luteolin is one of the major phytochemical components that exist in various traditional Chinese medicine or medical herbs. Mounting evidence reveals that this phytoconstituent endows prominent therapeutic actions on diverse malignancies, with the underlying mechanisms, combined medication strategy, and pharmacokinetics elusive. Additionally, the clinical trial and pharmaceutical investigation of luteolin remain to be systematically delineated. The present review aimed to comprehensively summarize the updated information with regard to the anticancer mechanism, combined medication strategies, pharmacokinetics, clinical trials, and pharmaceutical researches of luteolin. The survey corroborates that luteolin executes multiple anticancer effects mainly by dampening proliferation and invasion, spurring apoptosis, intercepting cell cycle, regulating autophagy and immune, inhibiting inflammatory response, inducing ferroptosis, and pyroptosis, as well as epigenetic modification, and so on. Luteolin can be applied in combination with numerous clinical anticarcinogens and natural ingredients to synergistically enhance the therapeutic efficacy of malignancies while reducing adverse reactions. For pharmacokinetics, luteolin has an unfavorable oral bioavailability, it mainly persists in plasma as glucuronides and sulfate-conjugates after being metabolized, and is regarded as potent inhibitors of OATP1B1 and OATP2B1, which may be messed with the pharmacokinetic interactions of miscellaneous bioactive substances in vivo. Besides, pharmaceutical innovation of luteolin with leading-edge drug delivery systems such as host-guest complexes, nanoparticles, liposomes, nanoemulsion, microspheres, and hydrogels are beneficial to the exploitation of luteolin-based products. Moreover, some registered clinical trials on luteolin are being carried out, yet clinical research on anticancer effects should be continuously promoted.
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Affiliation(s)
- Mingyi Shi
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zixian Chen
- College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hui Gong
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhaolei Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiang Sun
- Sichuan Provincial Key Laboratory of Individualized Drug Therapy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Kaipei Luo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Baoyu Wu
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chuanbiao Wen
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Lin
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Chang J, Huang C, Li S, Jiang X, Chang H, Li M. Research Progress Regarding the Effect and Mechanism of Dietary Polyphenols in Liver Fibrosis. Molecules 2023; 29:127. [PMID: 38202710 PMCID: PMC10779665 DOI: 10.3390/molecules29010127] [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: 10/31/2023] [Revised: 12/02/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
The development of liver fibrosis is a result of chronic liver injuries may progress to liver cirrhosis and liver cancer. In recent years, liver fibrosis has become a major global problem, and the incidence rate and mortality are increasing year by year. However, there are currently no approved treatments. Research on anti-liver-fibrosis drugs is a top priority. Dietary polyphenols, such as plant secondary metabolites, have remarkable abilities to reduce lipid metabolism, insulin resistance and inflammation, and are attracting more and more attention as potential drugs for the treatment of liver diseases. Gradually, dietary polyphenols are becoming the focus for providing an improvement in the treatment of liver fibrosis. The impact of dietary polyphenols on the composition of intestinal microbiota and the subsequent production of intestinal microbial metabolites has been observed to indirectly modulate signaling pathways in the liver, thereby exerting regulatory effects on liver disease. In conclusion, there is evidence that dietary polyphenols can be therapeutically useful in preventing and treating liver fibrosis, and we highlight new perspectives and key questions for future drug development.
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Affiliation(s)
- Jiayin Chang
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
| | - Congying Huang
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
| | - Siqi Li
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
| | - Xiaolei Jiang
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
| | - Hong Chang
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
| | - Minhui Li
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (J.C.); (C.H.); (S.L.); (X.J.)
- Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot 010020, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou 014040, China
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Zhang J, Ding W, Tang Z, Kong Y, Liu J, Cao X. Identification of the effective α-amylase inhibitors from Dalbergia odorifera: Virtual screening, spectroscopy, molecular docking, and molecular dynamic simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121448. [PMID: 35717927 DOI: 10.1016/j.saa.2022.121448] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/30/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Inhibiting the activity of α-amylase has been considered as one efficient way to prevent and treat type 2 diabetes recently. Dalbergia odorifera, a kind of Leguminosae plant, has a positive therapeutic effect on type 2 diabetes, possibly contributing by some constituents that can inhibit the activity of α-amylase. In this study, we found that eriodictyol was one potential constituent through virtual screening. The interaction mode between eriodictyol and α-amylase was elucidated by molecular docking, multi-spectroscopic analysis, and molecular dynamic simulation. The results revealed that eriodictyol quenched the intrinsic fluorescence of α-amylase, and the quenching mode was static quenching. Eriodictyol could spontaneously interact with α-amylase, mostly stabilized and influenced by the hydrophobic interaction, while the binding sites (n) was 1.13 ± 0.07 and binding constant (Kb) was (1.43 ± 0.14) × 105 at 310 K, respectively. In addition, FT-IR and CD had been applied to identify that eriodictyol can trigger the conformational change of α-amylase. Taken together, the results provided some experimental data for developing new α-amylase inhibitors from Dalbergia odorifera, which may further prevent and treat diabetes and diabetes complications.
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Affiliation(s)
- Jingjing Zhang
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China
| | - Weizhe Ding
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China
| | - Zhipeng Tang
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China
| | - Yuchi Kong
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China
| | - Jianli Liu
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China.
| | - Xiangyu Cao
- School of Life Science, Liaoning University, 66 Chongshan Middle Road, Shenyang 110036, China.
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Which Extraction Solvents and Methods Are More Effective in Terms of Chemical Composition and Biological Activity of Alceafasciculiflora from Turkey? Molecules 2022; 27:molecules27155011. [PMID: 35956963 PMCID: PMC9370370 DOI: 10.3390/molecules27155011] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/17/2022] Open
Abstract
The bioactive content, antioxidant properties, and enzyme inhibition properties of extracts of Alcea fasciculiflora from Turkey prepared with different solvents (water, methanol, ethyl acetate) and extraction methods (maceration, soxhlet, homogenizer assisted extraction, and ultrasound assisted extraction) were examined in this study. UHPLC-HRMS analysis detected or annotated a total of 50 compounds in A. fasciculiflora extracts, including 18 hydroxybenzoic and hydroxycinnamic acids, 7 Hexaric acids, 7 Coumarins, 15 Flavonoids, and 3 hydroxycinnamic acid amides. The extracts had phenolic and flavonoid levels ranging from 14.25 to 24.87 mg GAE/g and 1.68 to 25.26 mg RE/g, respectively, in the analysis. Both DPPH and ABTS tests revealed radical scavenging capabilities (between 2.63 and 35.33 mg TE/g and between 13.46 and 76.27 mg TE/g, respectively). The extracts had reducing properties (CUPRAC: 40.38–78 TE/g and FRAP: 17.51–42.58 TE/g). The extracts showed metal chelating activity (18.28–46.71 mg EDTAE/g) as well as total antioxidant capacity (phosphomolybdenum test) (0.90–2.12 mmol TE/g). DPPH, ABTS, FRAP, and metal chelating tests indicated the water extracts to be the best antioxidants, while the ethyl acetate extracts had the highest overall antioxidant capacity regardless of the extraction technique. Furthermore, anti-acetylcholinesterase activity was identified in all extracts (0.17–2.80 mg GALAE/g). The water extracts and the ultrasound-assisted ethyl acetate extract were inert against butyrylcholinesterase, but the other extracts showed anti-butyrylcholinesterase activity (1.17–5.80 mg GALAE/g). Tyrosine inhibitory action was identified in all extracts (1.79–58.93 mg KAE/g), with the most effective methanolic extracts. Only the ethyl acetate and methanolic extracts produced by maceration and homogenizer aided extraction showed glucosidase inhibition (0.11–1.11 mmol ACAE/g). These findings showed the overall bioactivity of the different extracts of A. fasciculiflora and provided an overview of the combination of solvent type and extraction method that could yield bioactive profile and pharmacological properties of interest and hence, could be a useful reference for future studies on this species.
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Aleixandre A, Gisbert M, Sineiro J, Moreira R, Rosell CM. In vitro inhibition of starch digestive enzymes by ultrasound-assisted extracted polyphenols from Ascophyllum nodosum seaweeds. J Food Sci 2022; 87:2405-2416. [PMID: 35590486 PMCID: PMC9324812 DOI: 10.1111/1750-3841.16202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/14/2022] [Accepted: 04/30/2022] [Indexed: 12/16/2022]
Abstract
Seaweeds are gaining importance due to their antidiabetic characteristics. This study investigated the inhibitory effects of aqueous Ascophyllum nodosum extracts, obtained by ultrasound-assisted extraction with different sonication powers (70-90 W/cm2 ) and subjected to resin purification, against α-amylase and α-glucosidase enzymes. Different inhibition methodologies were carried out, preincubating the extract either with the enzyme or the substrate. Chemical characterization, in terms of proximate analysis, antioxidant capacity (2,2-diphenyl-1-picryl-hydrazyl-hydrate [DPPH] and FRAP), and polyphenols characteristics (reversed-phase high-performance liquid chromatography [RP-HPLC] and 1 H-NMR) were carried out to explain inhibitory activities of extracts. Sonication power did not influence the proximal composition nor antiradical activity of extracts, but increasing sonication power increased inhibition capacity (>15%) against both starch digestive enzymes. The extract purification largely improved the inhibition efficiency decreasing the IC50 of α-amylase and α-glucosidase by 3.0 and 6.1 times, respectively. Seaweed extracts showed greater inhibition effect when they were preincubated with the enzyme instead of the substrate. RP-HPLC together with 1 H-NMR spectra allowed relating the presence of uronic acids-polyphenols complexes and quinones in the extracts with the different inhibitory capacities of samples. PRACTICAL APPLICATION: The study confirms that ultrasound-assisted extracts from Ascophyllum nodosum can be used to inhibit digestive enzymes. This opens the alternative to be used in foods for modulating glycemic index.
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Affiliation(s)
- Andrea Aleixandre
- Institute of Agrochemistry and Food Technology (IATA‐CSIC)PaternaSpain
| | - Mauro Gisbert
- Department of Chemical EngineeringUniversidade de Santiago de CompostelaSantiago de CompostelaSpain
| | - Jorge Sineiro
- Department of Chemical EngineeringUniversidade de Santiago de CompostelaSantiago de CompostelaSpain
| | - Ramón Moreira
- Department of Chemical EngineeringUniversidade de Santiago de CompostelaSantiago de CompostelaSpain
| | - Cristina M. Rosell
- Institute of Agrochemistry and Food Technology (IATA‐CSIC)PaternaSpain
- Department of Food and Human Nutritional SciencesUniversity of ManitobaWinnipegCanada
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