薛海瑞 李國秀 孫意冉 王韜宇 樊云芳 唐琳



摘 要 ???:為探究黑果枸杞花色苷最佳提取工藝和抗氧化活性,采用超聲酶輔助提取法、乙醇/硫酸銨雙水相萃取法、乙醇/磷酸二氫鈉雙水相萃取法提取黑果枸杞花色苷,通過響應面優化提取工藝,并使用 t -BHP誘導BRL 3A細胞建立抗氧化模型來探索黑果枸杞花色苷的氧化應激保護作用.結果表明,超聲酶輔助提取得率為:(17.92±0.04) mg/g;乙醇/硫酸銨雙水相萃取得率為:(15.46±0.31) mg/g; 乙醇/磷酸二氫鈉雙水相萃取得率為:(15.02±0.19) mg/g.體外抗氧化實驗表明,乙醇/硫酸銨雙水相萃取的花色苷(LRN)抗氧化活性最強,純化后的乙醇/硫酸銨雙水相萃取的花色苷(LRNA)可通過減少細胞中ROS的產生來緩解t-BHP誘導的氧化損傷.綜上所述,該工藝便捷、穩定可用于黑果枸杞花色苷的提取,同時證明了LRN抗氧化活性最強.
關鍵詞 :黑果枸杞; 花色苷; 響應面; 抗氧化; 活性氧;
中圖分類號 : Q949.95 文獻標識碼 :A DOI : ?10.19907/j.0490-6756.2023.046004
收稿日期: ?2022-10-21
基金項目: ?寧夏回族自治區重點研發計劃(2022BBF0100103)
作者簡介: ??薛海瑞(1997-), 男, 山西省太原人, 碩士研究生, 主要研究領域為藥用天然產物.
通訊作者: ?唐琳.E-mail:tanglin@scu.edu.cn
Research on optimization of the extraction process and antioxidant ?activity of anthocyanins from ?Lycium ruthenicum ?Murr.
XUE Hai-Rui ?1, LI Guo-Xiu ?1, SUN Yi-Ran ?1, WANG Tao-Yu ?1, FAN Yun-Fang ??2, TANG Lin ?1
(1. Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China;
2. Lycium Barbarum Research Institute, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan 750000, China)
To investigate the optimal extraction process and antioxidant activity of anthocyanins of ?Lycium ruthenicum ?Murr., the anthocyanins of ?Lycium ruthenicum ?Murr. were extracted by ultrasonic enzyme-assisted extraction, ethanol/ammonium sulfate aqueous two-phase extraction, ethanol/sodium dihydrogen phosphate aqueous two-phase extraction, and the extraction process was optimized by response surface methodology, the antioxidant model of BRL 3A cells induced by ?t -BHP was used to explore the protective effect of ?Lycium ruthenicum ?Murr. anthocyanins on oxidative stress. The results showed that the yield of ultrasonic enzyme assisted extraction was (17.92 ± 0.04) mg/g; the yield of ethanol/ammonium sulfate aqueous two-phase extraction was (15.46 ± 0.31) mg/g; the extraction yield of ethanol/sodium dihydrogen phosphate aqueous two-phase system was (15.02 ± 0.19) mg/g. The in vitro antioxidant experiments showed that the antioxidant activity of anthocyanins (LRN) extracted by EtOH/(NH 4) 2SO ?4 aqueous two-phase extraction was the strongest, purified EtOH/(NH 4) 2SO ?4 aqueous two-phase extraction of anthocyanins (LRNA) can alleviate ?t -BHP-induced oxidative damage by reducing ROS production in cells. In summary, this process is convenient and stable and can be used for the extraction of anthocyanins from ?Lycium ruthenicum ?Murr. At the same time, it also proves that LRN has the strongest antioxidant activity.
Lycium ruthenicum ?Murr.; Anthocyanins; Response surface; Antioxidant; ROS
1 引 言
黑果枸杞( Lycium ruthenicum ?Murr.)為茄科枸杞屬植物,是我國西北地區特有的耐旱、耐堿、耐鹽生灌木植物.其果實中含有豐富的花青素、類胡蘿卜素、維生素等多種營養成分 ?[1] , 關于黑果枸杞化學成分的研究目前主要有多糖類、黃酮類、花色苷類、生物堿類、精油和脂肪酸類,現代藥學研究表明,黑果枸杞具有抗氧化、抗疲勞、降血糖、降血脂、保肝護腎、免疫調節 ??[2-4].
花色……