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Zeng Y, Yu Z, Zhang Y, Jiang C, Huang X. Comparative study on the antioxidant efficacy of Adinandra nitida extracts in inhibiting lipid oxidation in edible oils. Food Chem X 2024; 23:101783. [PMID: 39280229 PMCID: PMC11402160 DOI: 10.1016/j.fochx.2024.101783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Revised: 08/21/2024] [Accepted: 08/24/2024] [Indexed: 09/18/2024] Open
Abstract
Exploring natural antioxidants is essential to delay lipid oxidation. This study investigated the inhibitory effect of Adinandra nitida (AN) extract in six edible oils, compared to TP and TBHQ. Methods included extract preparation, bioactive compounds analysis, in vitro antioxidant activities by FRAP, DPPH, and ABTS assays, fatty acid composition detection, and POV determination. The results showed that AN was rich in total flavonoids, total phenols and had better iron ion reduction ability than TBHQ. In oleic and linoleic acid-rich oils, AN significantly delayed early-stage lipid oxidation, outperforming TP and TBHQ. In linolenic acid-rich oils, AN maintained a stable effect. Molecular docking studies revealed strong binding interactions between main compounds and fatty acids, with Camelliaside A in (7.83) showing higher binding energy to linolenic acid than TBHQ (7.64), supporting the antioxidant effects. These findings suggest AN as a promising natural alternative to synthetic antioxidants, enhancing oil stability and shelf life.
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Affiliation(s)
- Yuan Zeng
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China
- School of Agriculture, Anshun University, Anshun 561000, China
| | - Zhengwen Yu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China
| | - Yubo Zhang
- School of Agriculture, Anshun University, Anshun 561000, China
| | - Chunyan Jiang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China
| | - Xue Huang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China
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Yang Y, Liang Q, Zhang B, Zhang J, Fan L, Kang J, Lin Y, Huang Y, Tan TC, Ho LH. Adsorption and desorption characteristics of flavonoids from white tea using macroporous adsorption resin. J Chromatogr A 2024; 1715:464621. [PMID: 38198876 DOI: 10.1016/j.chroma.2023.464621] [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: 09/18/2023] [Revised: 11/29/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
White tea contains the highest flavonoids compared to other teas. While there have been numerous studies on the components of different tea varieties, research explicitly focusing on the flavonoid content of white tea remains scarce, making the need for a good flavonoid purification process for white tea even more important. This study compared the adsorption and desorption performance of five types of macroporous resins: D101, HP20, HPD500, DM301, and AB-8. Among the tested resins, AB-8 was selected based on its best adsorption and desorption performance to investigate the static adsorption kinetics and dynamic adsorption-desorption purification of white tea flavonoids. The optimal purification process was determined: adsorption temperature 25 °C, crude tea flavonoid extract pH 3, ethanol concentration 80 %, sample loading flow rate and eluent flow rate 1.5 BV/min, and eluent dosage 40 BV. The results indicated that the adsorption process followed pseudo-second-order kinetics. Under the above purification conditions, the purity of the total flavonoids in the purified white tea flavonoid increased from approximately 17.69 to 46.23 %, achieving a 2.61-fold improvement, indicating good purification results. The purified white tea flavonoid can be further used for nutraceutical and pharmaceutical applications.
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Affiliation(s)
- Yuhua Yang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China; Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia
| | - Quanming Liang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Bo Zhang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Jianming Zhang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Li Fan
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Jiahui Kang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Yiqin Lin
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Yan Huang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China.
| | - Thuan-Chew Tan
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia; Renewable Biomass Transformation Cluster, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia.
| | - Lee-Hoon Ho
- Department of Food Industry, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut, Terengganu 22200, Malaysia
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de Moura C, Kabbas Junior T, Mendanha Cruz T, Boscacci Marques M, Araújo Vieira do Carmo M, Turnes Pasini Deolindo C, Daguer H, Azevedo L, Xu YQ, Granato D. Sustainable and effective approach to recover antioxidant compounds from purple tea (Camellia sinensis var. assamica cv. Zijuan) leaves. Food Res Int 2023; 164:112402. [PMID: 36737984 DOI: 10.1016/j.foodres.2022.112402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/20/2022] [Accepted: 12/24/2022] [Indexed: 01/01/2023]
Abstract
Camellia sinensis var. assamica cv. Zijuan (purple tea) is known for its content of anthocyanins, flavan-3-ols, and bioactivities. This study aimed to verify the influence of solvent polarity, in a solid-liquid extraction, on the content of phenolic compounds and chlorophylls, instrumental color, and antioxidant activity. Different proportions of water and ethanol (0:100, 25:75, 50:50, 75:25, and 100:0 v/v) were used for extraction. The results showed that the hydroalcoholic extract (75 % ethanol + 25 % water) had the highest contents of total flavonoids, total anthocyanins, chlorophyll A, and total carotenoids, as well as presenting the highest color intensity, proportion of yellow pigments, and antioxidant activity (total reducing capacity and scavenging of the DPPH free radical). Twenty-two compounds were identified, with chlorogenic acid, hesperidin, (-)-epicatechin, (-)-epigallocatechin gallate, and isoquercitrin being the main phenolics. This phenolic-rich extract inhibited lipoperoxidation induced in egg yolk homogenate (IC50 = 455 mg/L), showed no hemolytic behavior when human erythrocytes were subjected to osmotic stress, and exerted in vitro cytotoxic effects against cancer and hybrid cells. The extract obtained with the mixture of non-toxic solvents presented critical bioactivities, as well as a comprehensive identification of phenolic compounds in the cultivar, and has potential to be used in technological applications.
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Affiliation(s)
- Cristiane de Moura
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Tufy Kabbas Junior
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Thiago Mendanha Cruz
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Mariza Boscacci Marques
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | | | - Carolina Turnes Pasini Deolindo
- Brazilian Ministry of Agriculture, Livestock, and Food Supply (MAPA), Federal Agricultural Defense Laboratory, 88102-600 São José, SC, Brazil
| | - Heitor Daguer
- Brazilian Ministry of Agriculture, Livestock, and Food Supply (MAPA), Federal Agricultural Defense Laboratory, 88102-600 São José, SC, Brazil
| | - Luciana Azevedo
- Nutrition Faculty, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000 Alfenas, MG, Brazil
| | - Yong-Quan Xu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, 9 South Meiling Road, Hangzhou 310008, China
| | - Daniel Granato
- Bioactivity & Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
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