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Hao JW, Chen ND, Fan XX, Wang WT, Jiang HH, Zhang ZY, Gong RZ, Ruan XL, Chen X. Rapid determination of total flavonoid content, xanthine oxidase inhibitory activities, and antioxidant activity in Prunus mume by near-infrared spectroscopy. J Pharm Biomed Anal 2024; 246:116164. [PMID: 38776585 DOI: 10.1016/j.jpba.2024.116164] [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: 12/19/2023] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/25/2024]
Abstract
Evaluating the quality of herbal medicine based on the content and activity of its main components is highly beneficial. Developing an eco-friendly determination method has significant application potential. In this study, we propose a new method to simultaneously predict the total flavonoid content (TFC), xanthine oxidase inhibitory (XO) activity, and antioxidant activity (AA) of Prunus mume using near-infrared spectroscopy (NIR). Using the sodium nitrite-aluminum nitrate-sodium hydroxide colorimetric method, uric acid colorimetric method, and 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) free radical scavenging activity as reference methods, we analyzed TFC, XO, and AA in 90 P. mume samples collected from different locations in China. The solid samples were subjected to NIR. By employing spectral preprocessing and optimizing spectral bands, we established a rapid prediction model for TFC, XO, and AA using partial least squares regression (PLS). To improve the model's performance and eliminate irrelevant variables, competitive adaptive reweighted sampling (CARS) was used to calculate the pretreated full spectrum. Evaluation model indicators included the root mean square error of cross-validation (RMSECV) and determination coefficient (R2) values. The TFC, XO, and AA model, combining optimal spectral preprocessing and spectral bands, had RMSECV values of 0.139, 0.117, and 0.121, with RCV2 values exceeding 0.92. The root mean square error of prediction (RMSEP) for the TFC, XO, and AA model on the prediction set was 0.301, 0.213, and 0.149, with determination coefficient (RP2) values of 0.915, 0.933, and 0.926. The results showed a strong correlation between NIR with TFC, XO, and AA in P. mume. Therefore, the established model was effective, suitable for the rapid quantification of TFC, XO, and AA. The prediction method is simple and rapid, and can be extended to the study of medicinal plant content and activity.
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Affiliation(s)
- Jing-Wen Hao
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
| | - Nai-Dong Chen
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; College of Pharmacy, Anhui University of Chinese Medicine, No 1. Qianjiang Road, Hefei City, Anhui Province 230012, PR China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China.
| | - Xuan-Xuan Fan
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; College of Pharmacy, Anhui University of Chinese Medicine, No 1. Qianjiang Road, Hefei City, Anhui Province 230012, PR China
| | - Wei-Ting Wang
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; College of Pharmacy, Anhui University of Chinese Medicine, No 1. Qianjiang Road, Hefei City, Anhui Province 230012, PR China
| | - Huan-Huan Jiang
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
| | - Zi-Yi Zhang
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
| | - Rui-Ze Gong
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
| | - Xiao-Li Ruan
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
| | - Xue Chen
- College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an City 237012, China; Anhui Province Key Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China; Anhui Engineering Technology Center for Conservation and Utilization of Traditional Chinese Medicine Resource, Lu'an City 237012, China; Lu'an City Laboratory for Quality Evaluation and Improvement of Traditional Chinese Medicine, Lu'an City 237012, China
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Wang H, Zhou X, Liu Y, Xie W, Yang D, Huo D, Guo Q, Wang R. Identification and molecular docking of xanthine oxidase and α-glucosidase inhibitors in Opuntia ficus-indica fruit. J Food Sci 2024; 89:4192-4204. [PMID: 38829742 DOI: 10.1111/1750-3841.17144] [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: 02/07/2024] [Revised: 04/10/2024] [Accepted: 05/13/2024] [Indexed: 06/05/2024]
Abstract
Opuntia ficus-indica fruit (OFI) is rich in bioactive compounds, which can promote human health. In this work, the purified OFI extract was prepared from OFI and its bioactivities were investigated. Xanthine oxidase (XOD) and α-glucosidase (α-Glu) inhibitors of the purified OFI extract were screened and identified by bio-affinity ultrafiltration combined with UPLC-QTRAP-MS/MS technology. The inhibitory effect of these inhibitors on enzymes were verified, and the potential mechanism of action and binding sites of inhibitors with enzymes were revealed based on molecular docking. The results showed that the total phenolic content of the purified OFI extract was 355.03 mg GAE/g DW, which had excellent antioxidant activity. Additionally, the extract had a certain inhibitory effect on XOD (IC50 = 199.00 ± 0.14 µg/mL) and α-Glu (IC50 = 159.67 ± 0.01 µg/mL). Seven XOD inhibitors and eight α-Glu inhibitors were identified. Furthermore, XOD and α-Glu inhibition experiments in vitro confirmed that inhibitors such as chlorogenic acid, taxifolin, and naringenin had significant inhibitory effects on XOD and α-Glu. The molecular docking results indicated that inhibitors could bind to the corresponding enzymes and had strong binding force. These findings demonstrate that OFI contains potential substances for the treatment of hyperuricemia and hyperglycemia.
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Affiliation(s)
- Huixian Wang
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
| | - Xiaolu Zhou
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
- Collaborative Innovation Center of One Health, Hainan University, Haikou, China
| | - Yixuan Liu
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
| | - Wenxuan Xie
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
| | - Derui Yang
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
| | - Dongxue Huo
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
- Collaborative Innovation Center of One Health, Hainan University, Haikou, China
| | - Quan Guo
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
- Collaborative Innovation Center of One Health, Hainan University, Haikou, China
| | - Ruimin Wang
- School of Food Science and Engineering, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou, China
- Collaborative Innovation Center of One Health, Hainan University, Haikou, China
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Kumar N, Kaur K, Kaur N, Singh E, Bedi PMS. Pathology, target discovery, and the evolution of XO inhibitors from the first discovery to recent advances (2020-2023). Bioorg Chem 2024; 143:107042. [PMID: 38118298 DOI: 10.1016/j.bioorg.2023.107042] [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: 09/25/2023] [Revised: 11/11/2023] [Accepted: 12/15/2023] [Indexed: 12/22/2023]
Abstract
Hyperuricemia, a disease characterized by elevation of serum uric acid level beyond 6 mg/dL. This elevation led to appearance of symptoms from joint pain to gout and from gout to difficulty in mobility of the patient. So, in this review, we have summarized the pathology of hyperuricemia, discovery of target and discovery of first XO inhibitor. At last, this review provides in-sights about the recently discovered as natural XO inhibitors, followed by design, structure activity relationship and biological activity of synthetic compounds as XO inhibitors discovered between 2020 and 2023 years. At last, the pharmacophores generated in this study will guide new researchers to design and modify the structure of novel XO inhibitors.
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Affiliation(s)
- Nitish Kumar
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
| | - Komalpreet Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
| | - Navjot Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
| | - Ekampreet Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
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Yu D, Du J, He P, Wang N, Li L, Liu Y, Yang C, Xu H, Li Y. Identification of natural xanthine oxidase inhibitors: Virtual screening, anti-xanthine oxidase activity, and interaction mechanism. Int J Biol Macromol 2024; 259:129286. [PMID: 38216015 DOI: 10.1016/j.ijbiomac.2024.129286] [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: 09/05/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Xanthine oxidase (XO) is a crucial target for hyperuricemia treatment(s). Naturally occurred XO inhibitors with minimal toxicity and high efficacy have attracted researchers' attention. With the goal of quickly identifying natural XO inhibitors, an integrated computational screening strategy was constructed by molecular docking and calculating the free energy of binding. Twenty-seven hits were achieved from a database containing 19,377 natural molecules. This includes fourteen known XO inhibitors and four firstly-reported inhibitors (isolicoflavonol, 5,7-dihydroxycoumarin, parvifolol D and clauszoline M, IC50 < 40 μM). Iolicoflavonol (hit 8, IC50 = 8.45 ± 0.68 μM) and 5,7-dihydroxycoumarin (hit 25, IC50 = 10.91 ± 0.71 μM) displayed the great potency as mixed-type inhibitors. Docking study and molecular dynamics simulation revealed that both hits could interact with XO's primarily active site residues ARG880, MOS1328, and ASN768 of XO. Fluorescence spectroscopy studies showed that hit 8 bound to the active cavity region of XO, causing changes in XO's conformation and hydrophobicity. Hits 8 and 25 exhibit favorable Absorption, Distribution, Metabolism, and Excretion (ADME) properties. Additionally, no cytotoxicity against human liver cells was observed at their median inhibition concentrations against XO. Therefore, the present study offers isolicoflavonol and 5,7-dihydroxycoumarin with the potential to be disease-modifying agents for hyperuricemia.
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Affiliation(s)
- Dehong Yu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Jiana Du
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Pei He
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Na Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Lizi Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Can Yang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Haiqi Xu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanfang Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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Wang TW, Tan J, Li LY, Yang Y, Zhang XM, Wang JR. Combined analysis of inorganic elements and flavonoid metabolites reveals the relationship between flower quality and maturity of Sophora japonica L. FRONTIERS IN PLANT SCIENCE 2023; 14:1255637. [PMID: 38046598 PMCID: PMC10691490 DOI: 10.3389/fpls.2023.1255637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/30/2023] [Indexed: 12/05/2023]
Abstract
Flos Sophorae (FS), or the dried flower buds of Sophora japonica L., is widely used as a food and medicinal material in China. The quality of S. japonica flowers varies with the developmental stages (S1-S5) of the plant. However, the relationship between FS quality and maturity remains unclear. Inductively coupled plasma optical emission spectrometry (ICP-OES) and ultra-high performance liquid chromatography coupled with electrospray ionization-triple quadrupole-linear ion trap mass spectrometry (UPLC-ESI-Q TRAP-MS/MS) were used to analyze inorganic elements and flavonoid metabolites, respectively. A combined analysis of the inorganic elements and flavonoid metabolites in FS was conducted to determine the patterns of FS quality formation. Sixteen inorganic elements and 173 flavonoid metabolites that accumulated at different developmental stages were identified. Notably, 54 flavonoid metabolites associated with the amelioration of major human diseases were identified, and Ca, P, K, Fe, and Cu were postulated to influence flavonoid metabolism and synthesis. This study offers a novel perspective and foundation for the further exploration of the rules governing the quality of plant materials.
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Affiliation(s)
- Tian-Wang Wang
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-Center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Chongqing, China
| | - Jun Tan
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-Center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Chongqing, China
| | - Long-Yun Li
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-Center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Chongqing, China
| | - Yong Yang
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
| | - Xiao-Mei Zhang
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
| | - Ji-Rui Wang
- Three Grade Laboratory of Chinese Medicine Chemistry, Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-Center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Chongqing, China
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Cheng-yuan W, Jian-gang D. Research progress on the prevention and treatment of hyperuricemia by medicinal and edible plants and its bioactive components. Front Nutr 2023; 10:1186161. [PMID: 37377486 PMCID: PMC10291132 DOI: 10.3389/fnut.2023.1186161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
Hyperuricemia is another common metabolic disease, which is considered to be closely related to the development of many chronic diseases, in addition to the "three highs." Currently, although drugs show positive therapeutic effects, they have been shown to produce side effects that can damage the body. There is growing evidence that medicinal and edible plants and their bioactive components have a significant effect on hyperuricemia. In this paper, we review common medicinal and edible plants with uric acid-lowering effects and summarize the uric acid-lowering mechanisms of different bioactive components. Specifically, the bioactive components are divided into five categories: flavonoids, phenolic acids, alkaloids, polysaccharides, and saponins. These active substances exhibit positive uric acid-lowering effects by inhibiting uric acid production, promoting uric acid excretion, and improving inflammation. Overall, this review examines the potential role of medicinal and edible plants and their bioactive components as a means of combating hyperuricemia, with the hope of providing some reference value for the treatment of hyperuricemia.
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In Vitro Inhibitory Effects of Polyphenols from Flos sophorae immaturus on α-Glucosidase: Action Mechanism, Isothermal Titration Calorimetry and Molecular Docking Analysis. Foods 2023; 12:foods12040715. [PMID: 36832790 PMCID: PMC9956223 DOI: 10.3390/foods12040715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/31/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Flos sophorae immaturus (FSI) is considered to be a natural hypoglycemic product with the potential for a-glucosidase inhibitory activity. In this work, the polyphenols with α-glucosidase inhibition in FSI were identified, and then their potential mechanisms were investigated by omission assay, interaction, type of inhibition, fluorescence spectroscopy, circular dichroism, isothermal titration calorimetry and molecular docking analysis. The results showed that five polyphenols, namely rutin, quercetin, hyperoside, quercitrin and kaempferol, were identified as a-glucosidase inhibitors with IC50 values of 57, 0.21, 12.77, 25.37 and 0.55 mg/mL, respectively. Quercetin plays a considerable a-glucosidase inhibition role in FSI. Furthermore, the combination of quercetin with kaempferol generated a subadditive effect, and the combination of quercetin with rutin, hyperoside and quercitrin exhibited an interference effect. The results of inhibition kinetics, fluorescence spectroscopy, isothermal titration calorimetry and molecular docking analysis showed that the five polyphenols were mixed inhibitors and significantly burst the fluorescence intensity of α-glucosidase. Moreover, the isothermal titration calorimetry and molecular docking analysis showed that the binding to α-glucosidase was a spontaneous heat-trapping process, with hydrophobic interactions and hydrogen bonding being the key drivers. In general, rutin, quercetin, hyperoside, quercitrin and kaempferol in FSI are potential α-glucosidase inhibitors.
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Influence of Ultrasound-Assisted Vacuum Drying on Physicochemical Characteristics, Antioxidant Activity, and α-Glucosidase Inhibition Activity of Flos Sophorae Immaturus. Foods 2023; 12:foods12030671. [PMID: 36766199 PMCID: PMC9914521 DOI: 10.3390/foods12030671] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/25/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Flos Sophorae Immaturus (FSI) contains a large number of bioactive substances with antioxidant and hypoglycaemic activity. However, a feasible drying process plays an important role in the retention of its biological activity. The present work investigated the effects of ultrasound-assisted vacuum drying (UAVD) on FSI samples in terms of drying time, colour, microstructure, and total flavonoid content (TFC). Meanwhile, the antioxidant activity and α-glucosidase inhibition activity were also evaluated. The results show that the drying time of UVAD samples was decreased by 40% compared to that of the single vacuum-dried (VD) samples (600 W for 10 min). The cellular porous structures of FSI tissue were formed by UAVD, which promoted the migration of water from the inside to the outside. Furthermore, samples treated by UAVD exhibited better antioxidant activities and α-glucosidase and α-amylase inhibition capacities, with DPPH (81.86%), ABTS (88.61%), FRAP (83.05%), α-glucosidase inhibition capacity (89%), α-amylase (85%), drying time (3 h), and total aberration (ΔE) (1.63) being the highest characteristic traits. In this condition, the highest levels of total flavonoid content (TFC), rutin, quercetin, kaempferol, isorhamnetin, and genistein were obtained with 266.94, 239.46, 35.56, 8.54, 10.37, and 5.64 mg/g DW, respectively. The results confirm that UAVD is a novel method that significantly reduced the VD time and promoted the release of the bioactive substances of FSI.
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Li J, Gong Y, Li J, Fan L. Hydrothermal treatment improves xanthine oxidase inhibitory activity and affects the polyphenol profile of Flos Sophorae Immaturus. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1205-1215. [PMID: 36086816 DOI: 10.1002/jsfa.12215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Flos Sophorae Immaturus (FSI) is rich in polyphenols and a potential uric acid-lowering food. However, the processing of FSI is greatly restricted due to the heat sensitivity and low solubility of polyphenols. In this study, hydrothermal treatment - an effective strategy - was applied to FSI processing. The variation of xanthine oxidase (XO) inhibitory effect and polyphenol composition of FSI during hydrothermal treatment were recorded. RESULTS The XO inhibition rate of FSI increased from 32.42% to 89.00% after hydrothermal treatment at 220 °C for 30 min, as well as total polyphenols (from 0.66 to 1.11 mg mL-1 ) and flavonoids (from 1.21 to 1.58 mg mL-1 ). However, high thermal temperature (>160 °C) and extended thermal time (>90 min) caused the degradation of polyphenols. Rutin, kaempferol-3-O-rutinoside and narcissoside rapidly degraded and converted to quercetin, kaempferol and isorhamnetin when the temperature exceeded 160 °C. The maximum yields of quercetin, kaempferol and isorhamnetin were at 220 °C for 30 min, 90 min and 90 min, respectively. Meanwhile, the conversion kinetics conformed to the first-order model. Interestingly, these newly formed polyphenols possessed better XO inhibitory effects than their derivatives with 3-O-rutinoside. CONCLUSION Polyphenol conversion during hydrothermal treatment was the main reason for enhancing XO inhibitory activity. Therefore, hydrothermal treatment is an appropriate method for improving the XO inhibitory effect of FSI. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jun Li
- State Key laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- Institute of Food Processing Technology, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Yuhong Gong
- State Key laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jinwei Li
- State Key laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Liuping Fan
- State Key laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
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Nutritional Attributes and Phenolic Composition of Flower and Bud of Sophora japonica L. and Robinia pseudoacacia L. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248932. [PMID: 36558062 PMCID: PMC9782067 DOI: 10.3390/molecules27248932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/07/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Sophora japonica L. (SJL) and Robinia pseudoacacia L. (RPL) are widely cultivated in China. However, the utilization of their main by-products are limited due to a lack of comprehensive nutritional attributes. Herein, the proximate composition, mineral elements, fatty acids, amino acids, monosaccharides, and phenolics were analyzed to investigate the nutritional attributes of SJL and RPL. Dietary fiber was the main ingredient in SJL and RPL, followed by protein and lipids. The content of Fe in SJL and RPL was highest, especially in flowers of SJL, reaching about 1179.51 mg/kg. The total unsaturated fatty acids accounted for 89.67% of the bud of SJL. Meanwhile, the essential amino acids contents of the flower and bud of SJL and RPL accounted for 35.95-40.59% of total amino acids. The flower of SJL (373.75 mg/g) exhibited the most abundant monosaccharides. Meanwhile, the total phenolics and flavonoid contents in the buds of SJL and RPL were significantly higher than that of the flower, implying the buds possessed better biological activity. Moreover, the bud of SJL possessed the most abundant phenolics. The results provided a reference for the development of functional food derived from SJL and RPL.
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Stir-frying treatment improves the color, flavor, and polyphenol composition of Flos Sophorae Immaturus tea. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.105045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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