|
1
|
Tang Z, Huang G, Huang H. Ultrasonic-assisted extraction, analysis and properties of purple mangosteen scarfskin polysaccharide and its acetylated derivative. ULTRASONICS SONOCHEMISTRY 2024; 109:107010. [PMID: 39094265 DOI: 10.1016/j.ultsonch.2024.107010] [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: 06/18/2024] [Revised: 07/16/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
Purple mangosteen scarfskin polysaccharide has many important physiological functions, but its preparation method, structure, and function need further exploration. A polysaccharide was obtained from mangosteen scarfskin by ultrasonic-assisted extraction and purified. On this basis, its structure and physicochemical properties were investigated. The Congo red experiment was used to determine whether it has a triple helix conformation. The structure of purple mangosteen scarfskin polysaccharide was further analyzed by infrared spectroscopy and nuclear magnetic analysis. The antioxidant activities of the above three polysaccharides were studied by related experiments. It was found that the monosaccharide composition of purple mangosteen scarfskin polysaccharide mainly contained a large amount of arabinose, a small amount of rhamnoose and a very small amount of galacturonic acid, and its core main chain was composed of 1,4-α-arabinose. It did not have this spatial configuration. After the acetylation of purple mangosteen scarfskin polysaccharide, the acetylated derivative with a degree of substitution of 0.33 was obtained. It was found that they had certain scavenging and inhibiting effects on hydroxyl radicals and lipid peroxidation, and their activities were related to the concentration of polysaccharides. Meanwhile, the antioxidant activity of the polysaccharide was significantly enhanced after the modified treatment of acetylation, which indicated that chemical modification could effectively improve some activities of polysaccharide. The above studies provided some reference value for the further research and development of purple mangosteen scarfskin polysaccharide.
Collapse
Affiliation(s)
- Zhenjie Tang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.
| | - Hualiang Huang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Wuhan Institute of Technology, Wuhan 430074, China.
| |
Collapse
|
|
2
|
Wang Y, Huang G, Huang H. Ultrasonic/enzymatic extraction, characteristics and comparison of leechee peel polysaccharide. ULTRASONICS SONOCHEMISTRY 2024; 108:106948. [PMID: 38878717 PMCID: PMC11227029 DOI: 10.1016/j.ultsonch.2024.106948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 07/09/2024]
Abstract
In this study, the process conditions, physicochemical properties, structural composition and activity of polysaccharides isolated from leechee peel (LPP) by ultrasound-assisted extraction (UAE) with enzyme and alkali solution extraction (ASE) were compared. The results showed that the total sugar content of LPP extracted by UAE accounted for 75.65 %, which was significantly higher than that extracted by alkali solution. The optimum conditions were as follows: extraction temperature of 68.78 ℃, ultrasonic enzymolysis time of 39.68 min, pectinase dosage of 4.03 %, solid-liquid ratio of 1:30 g/mL, and ultrasonic power of 360 W. The antioxidant activities and structure of leechee peel polysaccharide (LPP) prepared under different conditions were compared. It was found that UAE-LPP was an α-type polysaccharide containing 15.83 % uronic acid. Moreover, LPP extracted by UAE showed strong activity in anti-lipid peroxidation and reducing ability. Ultrasound-assisted enzymatic method is an effective means to improve the content and activity of natural plant polysaccharides, and this method has the advantages of short time-consuming, simple process and easy operation, which can greatly improve the utilization rate of polysaccharides and lay a theoretical and scientific basis for the development and utilization of LPP.
Collapse
Affiliation(s)
- Yijie Wang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.
| | - Hualiang Huang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Wuhan Institute of Technology, Wuhan 430074, China.
| |
Collapse
|
|
3
|
Tang Z, Huang G. Antioxidant activity of polysaccharide from Garcinia mangostana rind and their derivatives. BMC Complement Med Ther 2024; 24:283. [PMID: 39054446 PMCID: PMC11274750 DOI: 10.1186/s12906-024-04594-z] [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: 01/11/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Polysaccharide from Garcinia mangostana rind has many biological activities and deserves further research. METHODS The antioxidant properties of UAEE-GMRP, UAEE-GMRP-1 A, CM-30, and Ac-30 were evaluated through two different antioxidant activity experimental systems. RESULTS The four polysaccharides had a better scavenging effect on hydroxyl radicals, while their inhibitory effect on lipid peroxidation was relatively weak. However, overall, the four polysaccharides showed a certain degree of potential application in the two antioxidant experiments mentioned above, especially the chemically modified polysaccharides from Garcinia mangostana rind, which effectively improved their antioxidant activity. This also indicates that chemical modification is a better method to improve polysaccharide activity. In addition, in these two antioxidant exploration experiments, carboxymethylated polysaccharide showed stronger activity compared to the other three polysaccharides. CONCLUSION The carboxymethylation modification may have great potential for application.
Collapse
Affiliation(s)
- Zhenjie Tang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing, 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing, 401331, China.
| |
Collapse
|
|
4
|
Luo X, Zhen D, Deng Q, Guo M, Mao H, Dai H, Xie ZH, Zhong J, Liu Y. Corrosion inhibition activity of a natural polysaccharide from Dysosma versipellis using tailor-made deep eutectic solvents. Int J Biol Macromol 2024; 268:129220. [PMID: 38191116 DOI: 10.1016/j.ijbiomac.2024.129220] [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: 08/21/2023] [Revised: 12/21/2023] [Accepted: 01/02/2024] [Indexed: 01/10/2024]
Abstract
In this work, a total of 18 types of choline chloride, betaine, and L-proline-based deep eutectic solvents (DESs) were synthesized to determine the extraction yield of a natural polysaccharide (PSA) from Dysosma versipellis using an ultrasound-assisted extraction method. Results indicate that the choline-oxalic acid-based DES has the best extraction yield for PSA due to the proper physical-chemical properties between PSA and DES. To evaluate the optimal extraction conditions, a response surface methodology was carried out. Under the optimal conditions, the extraction yield of PSA reaches 10.37 % (± 0.03 %), higher than the conventional extraction methods. Findings from FT-IR and NMR suggest that the extracted PSA belongs to a neutral polysaccharide with (1 → 6)-linked α-d-glucopyranose in the main chain. Interestingly, results from various electrochemical measurements show the extracted PSA exhibits excellent corrosion inhibition performance for mild steel (MS) in a 0.5 M HCl solution, with 90.8 % of maximum corrosion inhibition efficiency at 210 mg L-1. SEM and XPS measurements reveal the formation of a protective layer on the MS surface. The adsorption behaviour of extracted PSA well obeys the Langmuir adsorption isotherm containing the chemisorption and physisorption. Additionally, theoretical calculations validate the experimental findings.
Collapse
Affiliation(s)
- Xiaohu Luo
- Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyan 558000, PR China; State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Deshuai Zhen
- Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyan 558000, PR China; School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China; State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Qiuhui Deng
- School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Meng Guo
- Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyan 558000, PR China
| | - Haili Mao
- School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Homg Dai
- Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyan 558000, PR China.
| | - Zhi-Hui Xie
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, PR China.
| | - Junbo Zhong
- Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Sichuan University of Science & Engineering, Zigong 637002, PR China
| | - Yali Liu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
| |
Collapse
|
|
5
|
Hou S, Zhang D, Yu D, Li H, Xu Y, Wang W, Li R, Feng C, Meng J, Xu L, Cheng Y, Chang M, Geng X. Effect of Different Drying Methods on the Quality of Oudemansiella raphanipes. Foods 2024; 13:1087. [PMID: 38611391 PMCID: PMC11011357 DOI: 10.3390/foods13071087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/23/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
In this study, we used fresh Oudemansiella raphanipes as raw materials and pre-treated through hot air drying (HD), infrared radiation drying (ID), and vacuum freeze drying (VD) to investigate the effects of different drying methods on the rehydration rate, appearance quality, microstructure, and volatile flavor components of the dried products, as well as to determine the physicochemical properties and bioactivities of the polysaccharides in the dried O. raphanipes. The results showed that the VD O. raphanipes had the highest rehydration rate and the least shrinkage in appearance, and it better maintained the original color of the gills, but their aroma was not as strong as that of the HD samples. The scanning electron microscopy results indicate that VD maintains a good porous structure in the tissue, while HD and ID exhibit varying degrees of shrinkage and collapse. Seventy-five common volatile substances were detected in the three dried samples, mainly alkanes, alcohols, and esters. The polysaccharides (PS-H, PS-I, and PS-V) extracted from the dried samples of these three species of O. raphanipes had similar infrared spectral features, indicating that their structures are basically consistent. The highest yield was obtained for PS-V, and the polysaccharide content and glucuronic acid content of PS-I were higher than those of the remaining two polysaccharides. In addition, PS-V also showed better antioxidant activity and inhibitory activity against α-glucosidase as well as α-amylase. In conclusion, among the above three drying methods, the quality of O. raphanipes obtained by vacuum freeze drying is the best, and this experiment provides a theoretical basis for the selection of drying methods for O. raphanipes.
Collapse
Affiliation(s)
- Shuting Hou
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Defang Zhang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Dongmei Yu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Hao Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Yaping Xu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Wuxia Wang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Ruiting Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
| | - Cuiping Feng
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Jinzhong 030801, China
| | - Junlong Meng
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Edible Fungi Engineering Technology Research Center, Jinzhong 030801, China
| | - Lijing Xu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Jinzhong 030801, China
| | - Yanfen Cheng
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Jinzhong 030801, China
| | - Mingchang Chang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Edible Fungi Engineering Technology Research Center, Jinzhong 030801, China
| | - Xueran Geng
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China; (S.H.); (D.Z.); (D.Y.); (H.L.); (Y.X.); (W.W.); (R.L.); (C.F.); (J.M.); (L.X.); (Y.C.); (X.G.)
- Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Jinzhong 030801, China
| |
Collapse
|
|
6
|
Tan MJ, Li Y, Zhao SQ, Yue FH, Cai DJ, Wu JT, Zeng XA, Li J, Han Z. Synergistic ultrasound pulsed electric field extraction of litchi peel polyphenols and determination of their properties. Int J Biol Macromol 2024; 260:129613. [PMID: 38246440 DOI: 10.1016/j.ijbiomac.2024.129613] [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: 08/21/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/23/2024]
Abstract
The effects of pulsed electric field combined with ultrasound (PEF-US) on the recovery of polyphenols from litchi peels were investigated. In addition, the optimal purification parameters for polyphenol extracts and their biological activities were also explored in this study. Single-factor and orthogonal experiments were used to optimize the extraction conditions of polyphenols. After optimization, the total phenol content (TPC) of the sample extracted by PEF-US was 2.30 times higher than that of the sample extracted by traditional hot-water extraction. The mechanism of PEF-US enhancing polyphenol recovery was also revealed by morphological analysis of the powder surface. LX-7 was the best resin by comparing the purification effect of nine macroporous resins. The optimum conditions for purification of litchi peel polyphenols by LX-7 resin were also optimized through adsorption and desorption experiments. UHPLC-MS and HPLC results revealed that gentisic acid, catechin, procyanidin A2 and procyanidin B1 are four main substances in purified samples. The results of bioactivity experiments showed that the purified polyphenol samples had strong antioxidant and antibacterial activity. Overall, PEF-US is an efficient method for recovering polyphenols from litchi peels. Our study also provides a strategy for the comprehensive utilization of fruit processing waste.
Collapse
Affiliation(s)
- Ming-Jun Tan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ying Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Si-Qi Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Fu-Hao Yue
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Die-Jia Cai
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jin-Tao Wu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xin-An Zeng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Jian Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China.
| | - Zhong Han
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China; Yangjiang Research Institute, South China University of Technology, Yangjiang 529500, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China.
| |
Collapse
|
|
7
|
Chen L, Cui C, Wang Z, Che F, Chen Z, Feng S. Structural Characterization and Antioxidant Activity of β-Glucans from Highland Barley Obtained with Ultrasonic-Microwave-Assisted Extraction. Molecules 2024; 29:684. [PMID: 38338428 PMCID: PMC10856557 DOI: 10.3390/molecules29030684] [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: 01/08/2024] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
In order to efficiently extract β-glucan from highland barley (HBG) and study its structural characterization and antioxidant activity, ultrasonic-microwave-assisted extraction (UME) was optimized by the response surface method (RSM). Under the optimal extraction conditions of 25.05 mL/g liquid-solid ratio, 20 min ultrasonic time, and 480 W microwave intensity, the DPPH radical scavenging activity of HBG reached 25.67%. Two polysaccharide fractions were purified from HBG, namely HBG-1 and HBG-2. Structural characterization indicated that HBG-1 and HBG-2 had similar functional groups, glycosidic linkages, and linear and complex chain conformation. HBG-1 was mainly composed of glucose (98.97%), while HBG-2 primarily consisted of arabinose (38.23%), galactose (22.01%), and xylose (31.60%). The molecular weight of HBG-1 was much smaller than that of HBG-2. Both HBG-1 and HBG-2 exhibited concentration-dependent antioxidant activity, and HBG-1 was more active. This study provided insights into the efficient extraction of HBG and further investigated the structure and antioxidant activities of purified components HBG-1 and HBG-2. Meanwhile, the results of this study imply that HBG has the potential to be an antioxidant in foods and cosmetics.
Collapse
Affiliation(s)
- Lihua Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China; (C.C.); (Z.W.)
| | - Chunfeng Cui
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China; (C.C.); (Z.W.)
| | - Zhiheng Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China; (C.C.); (Z.W.)
| | - Fuhong Che
- Qinghai Huzhu Barley Wine Co., Ltd., Haidong 810500, China; (F.C.); (Z.C.)
| | - Zhanxiu Chen
- Qinghai Huzhu Barley Wine Co., Ltd., Haidong 810500, China; (F.C.); (Z.C.)
| | - Shengbao Feng
- Qinghai Huzhu Barley Wine Co., Ltd., Haidong 810500, China; (F.C.); (Z.C.)
| |
Collapse
|
|
8
|
Zhang J, Cui H, Yin J, Wang Y, Zhao Y, Yu J, Engelhardt UH. Separation and antioxidant activities of new acetylated EGCG compounds. Sci Rep 2023; 13:20964. [PMID: 38017306 PMCID: PMC10684485 DOI: 10.1038/s41598-023-48387-9] [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: 03/15/2023] [Accepted: 11/26/2023] [Indexed: 11/30/2023] Open
Abstract
Acetylation could improve the bioavailability of (-)-Epigallocatechin-3-Gallate (EGCG), but the relationship of substitution degree and antioxidant capacity of acetylated EGCG was unclear. The acetylated EGCG products were separated by preparation high performance liquid chromatography (HPLC). Two mono substituted acetylated EGCG, three substituted acetylated EGCG (T-AcE), eight substituted acetylated EGCG (E-AcE) and (-)-Epigallocatechin gallate (EGCG) were isolated. The 7-acetyl-EGCG (S7-ACEGCG) and 7-acetyl-EGCG (T-AcE) were identified for the first time. The antioxidant capacity, superoxide anion radical scavenging capacities, and hydroxyl radical scavenging capacities of EGCG decreased significantly after acetylation modification. The more EGCG acetylation modification sites, the lower the total antioxidant capacity, superoxide anion radical scavenging capacities, and hydroxyl radical scavenging capacities. The antioxidant capacity, superoxide anion radical scavenging capacities, and hydroxyl radical scavenging capacities of 5-acetyl-EGCG (S5-ACE) were higher than 7-acetyl-EGCG (S7-AcE). Combining all the results in this and previous studies, acetylation modification is not conducive to the performance of EGCG antioxidant capacity.
Collapse
Affiliation(s)
- Jianyong Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China.
| | - Hongchun Cui
- Tea Research Institute, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Junfeng Yin
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China
| | - Yuwan Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China
| | - Yun Zhao
- Tea Research Institute, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Jizhong Yu
- Tea Research Institute, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Ulrich H Engelhardt
- Institute of Food Chemistry, Technischen Universität Braunschweig, Braunschweig, 38106, Braunschweig, Germany
| |
Collapse
|
|
9
|
Tang Z, Huang G, Huang H. Ultrasonic/cellulase-assisted extraction of polysaccharide from Garcinia mangostana rinds and its carboxymethylated derivative. ULTRASONICS SONOCHEMISTRY 2023; 99:106571. [PMID: 37690259 PMCID: PMC10498308 DOI: 10.1016/j.ultsonch.2023.106571] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/18/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
Response surface methodology was selected to explore the ultrasonic-assisted cellulase extraction conditions of Garcinia mangostana rind polysaccharides (GMRPs), and the optimum values of each condition were as follows: ratio of raw material to liquid of 1:50 g/mL, ultrasonic time of 40 min, enzyme concentration of 4 %, and ultrasonic power of 179 W. Based on the above conditions, the average extraction rate of GMRPs was 15.56 %. GMRPs were modified by carboxymethylation, and the relationship between the amount of chloroacetic acid and the substitution degree of carboxymethylated derivative was compared. Based on the results of single factor experiment, it was shown that the amount of chloroacetic acid significantly affected the degree of substitution of derivative products. The above research provides some valuable theoretical references for the preparation of GMRPs and its carboxymethylation products.
Collapse
Affiliation(s)
- Zhenjie Tang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.
| | - Hualiang Huang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Wuhan Institute of Technology, Wuhan 430074, China.
| |
Collapse
|
|
10
|
Lin B, Wang S, Zhou A, Hu Q, Huang G. Ultrasound-assisted enzyme extraction and properties of Shatian pomelo peel polysaccharide. ULTRASONICS SONOCHEMISTRY 2023; 98:106507. [PMID: 37406540 PMCID: PMC10422119 DOI: 10.1016/j.ultsonch.2023.106507] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/18/2023] [Accepted: 06/26/2023] [Indexed: 07/07/2023]
Abstract
In this study, Shatian pomelo peel was used as the raw material for extracting polysaccharides using hot water extraction (HW) and ultrasonic-assisted enzyme (UVE) methods, respectively. The optimal parameters for extractingShatian pomelo peel polysaccharides (StPP) using the ultrasound-assisted enzymatic method were determined using response surface methodology (RSM). The optimal conditions for the extraction of StPP were as follows: ultrasound power 350 W, ultrasound time 50 min, enzymatic digestion time 50 min, compound enzyme addition 1.5%, and enzymatic digestion temperature 55 °C. The yield of StPP was found to be 30.1310% under these conditions. Comparing the physicochemical properties and antioxidant activity of StPP extracted using different methods, it was observed that ultrasound-assisted enzyme extraction resulted in higher yield, sugar content and glucuronic acid content of StPP compared to traditional hot water extraction. Additionally, StPP extracted by ultrasound-assisted enzyme extraction showed better antioxidant activity. These results suggest that ultrasound-assisted enzymatic extraction is an effective method to enhance the activity of natural polysaccharides.
Collapse
Affiliation(s)
- Bobo Lin
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Shasha Wang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Anqi Zhou
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Qiurui Hu
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.
| |
Collapse
|
|
11
|
Chen Q, Zhang W, Huang G. Preparation and Antioxidant Activity of Acetylated Mung Bean Peel Polysaccharides. Chem Biodivers 2023; 20:e202300175. [PMID: 37345949 DOI: 10.1002/cbdv.202300175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 06/23/2023]
Abstract
Mung bean peel polysaccharides are one of the main active components in mung bean peel. Acetylated mung bean peel polysaccharides were prepared by extracting and acetylating them, and characterized by infrared and ultraviolet methods to preliminarily understand the structural characteristics and activity of acetylated mung bean peel polysaccharides. Acetylation modification can improve the structure of polysaccharides, thereby causing changes in their properties. The product obtained after acetylation modification exhibited new characteristic absorption peaks at 1732 cm-1 , and the scavenging ability of hydroxyl radicals was improved. Therefore, acetylation modification of mung bean peel polysaccharides could enhance the activity by improving the structure, which provided an experimental basis for the application of mung bean peel polysaccharides.
Collapse
Affiliation(s)
- Quan Chen
- Key Laboratory of Carbohydrate Science and Engineering, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China
| | - Wenting Zhang
- Key Laboratory of Carbohydrate Science and Engineering, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China
| |
Collapse
|
|
12
|
Yang W, Huang G. Preparation and analysis of polysaccharide from Solanum tuberdsm. ULTRASONICS SONOCHEMISTRY 2023; 98:106520. [PMID: 37453259 PMCID: PMC10368910 DOI: 10.1016/j.ultsonch.2023.106520] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/28/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
The crude Solanum tuberdsm polysaccharides (STP) were extracted with hot water. In the process of extraction, proteins, pigments, small molecules and salts in the mixture were removed by Sevage reagent, diatomite and distilled water dialysis, respectively. In addition, the process conditions of protein removal by response surface methodology (RSM) were optimized, and the optimum process conditions of Sevage method were established as follows: ultrasound power 350 W, ultrasound time 20 min, deproteinization twice, volume ratio of polysaccharide solution to Sevage reagent 1:1 (mL/mL). Under these conditions, the protein removal rate was 93.14%.
Collapse
Affiliation(s)
- Wenjian Yang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.
| |
Collapse
|