Process Optimization and in vitro Hypoglycemic Effect of Polyphenols Extracted from Jaboticaba Leaves
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摘要:
目的 优化嘉宝果叶片总多酚的提取工艺,检测优化提取后的嘉宝果叶片提取物对α-葡萄糖苷酶的抑制作用。 方法 利用超声波辅助与乙醇提取相结合的方法,以总多酚提取量为考察指标,采用单因素及正交试验,研究功率、时间、乙醇体积分数、料液比和温度对嘉宝果叶片总多酚提取量的影响,并采用酶动力学及紫外可见吸收光谱法探讨叶片提取物体外抑制α-葡萄糖苷酶的活性。 结果 嘉宝果叶片总多酚的最佳提取工艺为:功率120 W,时间10 min,乙醇体积分数40%,料液比1:160(g:mL),温度40℃,在此条件下,嘉宝果叶片总多酚质量分数可达33.84%。优化提取后的嘉宝果叶片提取物对α-葡萄糖苷酶具有较强的抑制作用,半数抑制浓度IC50为0.003 1 mg·mL-1,阿卡波糖对α-葡萄糖苷酶的半数抑制浓度IC50为8.110 8 mg·mL-1;Lineweaver-Burk双倒数作图显示嘉宝果叶片多酚对α-葡萄糖苷酶的抑制类型为反竞争性抑制。 结论 正交实验法优化嘉宝果叶片总多酚提取具有可行性,嘉宝果叶片总多酚对α-葡萄糖苷酶具有较强的抑制作用,可作为降血糖功能因子进行开发利用。 Abstract:Objective To optimize the polyphenol extraction from leaves of jaboticaba and determine the α-glucosidase inhibition by the extract. Method The ethanol extraction with ultrasound application was optimized by an orthogonal experiment. Effects of the power and time of ultrasonic application as well as the ethanol volume fraction, material-solvent ratio, and processing temperature on the total polyphenols extracted from the leaves were analyzed. The inhibition on α-glucosidase activity by the extract was determined in vitro by an enzyme kinetic study and uv-vis absorption spectrometry. Result The optimal extraction conditions included the use of 120 W ultrasonic wave for 10 min, 40% ethanol volume fraction, 1:160(g:mL) material-solvent ratio, and 40℃ processing temperature to achieve a polyphenol extraction rate of 33.84%. The α-glucosidase activity was significantly inhibited by the extract with a low IC50 of 0.0031 mg·mL-1, as compared to IC50 of 8.110 8 mg·mL-1 on acarbose. The kinetic study by the Lineweaver-Burk plot showed that the polyphenol extract was an anti-competitive inhibitor of α-glucosidase. Conclusion The polyphenol extract from jaboticaba leaves significantly inhibited α-glucosidase and could be explored for use as a hypoglycemic agent. -
Key words:
- Jaboticaba /
- polyphenol /
- α-glucosidase /
- orthogonal test
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表 1 正交试验因素水平
Table 1. Factors and levels of orthogonal experiment
水平
Level乙醇体积分数
Ethanol volume fraction/%料液比
Material-solvent ratio/(g:mL)温度
Temperature/℃1 20 1:120 20 2 40 1:160 30 3 60 1:200 40 表 2 正交试验设计与结果
Table 2. Orthogonal design, results and range analysis
试验号
Numbers因素 总多酚提取量
Total polyphenol/%A/% B/(g:mL) C/℃ D 1 1(20) 1(1:120) 1(20) 1 30.13 2 1 2(1:160) 2(30) 2 31.91 3 1 3(1:200) 3(40) 3 31.59 4 2(40) 1 2 3 32.67 5 2 2 3 1 34.52 6 2 3 1 2 34.06 7 3(60) 1 3 2 32.22 8 3 2 1 3 33.14 9 3 3 2 1 33.20 k1 93.63 95.02 97.33 97.85 k2 101.25 99.57 97.78 98.19 k3 98.56 98.85 98.33 97.40 R 7.62 4.55 1.00 0.79 注:表中因素A为乙醇体积分数,B为液料比,C为温度,D为空列。表 3同。
Note:A.Ethanol volume fraction,B.Material-solvent ratio,C.Temperature,D.Vacant column.The same as table 3.表 3 正交试验结果方差分析
Table 3. Analysis of variance on results of orthogonal experiment
变异来源
Variations偏差平方和
Sum of square自由度
FreedomF值
F valueF临界值
F critical valueP值
P valueA 9.956 2 94.819 19.000 <0.05 B 3.988 2 37.981 19.000 <0.05 C 0.167 2 1.590 19.000 >0.05 D 0.105 2 1.000 19.000 >0.05 误差Errors 0.105 2 表 4 嘉宝果总多酚提取物对α-葡萄糖苷酶抑制作用的Lineweaver-Burk曲线方程
Table 4. Lineweaver-Burk plot equation for inhibition of polyphenol extract on α-glucosidase
项目
Items质量浓度
Mass concentration/(mg·mL-1)线性回归方程Linear regression equation R2 Vmax/(OD·min-1) Km/(mmol·L-1) 斜率Slope 截距Intercept 对照组Contrast 0 5.7203 8.0232 0.9976 0.1246 0.7130 嘉宝果总多酚
Total polyphenol0.003 5.8844 22.6842 0.9974 0.0441 0.2594 0.006 5.8105 61.6144 0.9976 0.0162 0.0943 -
[1] FA V D L, LUCASSEN P L, AKKERMANS R P, et al. Alpha-glucosidase inhibitors for type 2 diabetes mellitus:A systematic review[J]. Chinese Journal of Evidence-Based Medicine, 2006, 20(2):335-350. http://cn.bing.com/academic/profile?id=2dd07f51e7bf7a84ff5e7339be65fe18&encoded=0&v=paper_preview&mkt=zh-cn [2] 王占一, 张立华, 王玉海, 等.超声波辅助纤维素酶提取石榴幼果多酚及其抑制α-葡萄糖苷酶活性[J].食品科学, 2017(18):221-228. http://d.old.wanfangdata.com.cn/Periodical/spkx201718034WANG Z Y, ZHANG L H, WANG Y H, et al. Optimization of ultrasonic-assisted cellulase-based extraction and anti-α-glucosidase activity of polyphenols from pomegranate fruitlets[J]. Food Science, 2017(18):221-228.(in chinese) http://d.old.wanfangdata.com.cn/Periodical/spkx201718034 [3] KALITA D, HOLM D G, LABARBERA D V, et al. Inhibition of α-glucosidase, α-amylase, and aldose reductase by potato polyphenolic compounds[J]. Plos One, 2018, 13(1):1-21. http://cn.bing.com/academic/profile?id=642accdcbf7500996a24fde946ac8876&encoded=0&v=paper_preview&mkt=zh-cn [4] 柳余莉, 杨文康, 刘合生, 等.杨梅多酚粗提物对α-葡萄糖苷酶体外抑制作用的研究[J].果树学报, 2016(1):59-65. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201601008LIU Y L, YANG W K, LIU H S, et al. Inhibitory effects of the polyphenol extracts from Chinese bayberry on α-glucosidase in vitro[J]. Journal of Fruit Science, 2016(1):59-65. (in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201601008 [5] 邱珊莲, 林宝妹, 郑开斌, 等.不同品种树葡萄叶片醇提物抗氧化及抑制α-葡萄糖苷酶活性研究[J].果树学报, 2017, 34(11):1450-1457. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201711011QIU S L, LIN B M, ZHENG K B, et al. Antioxidative activity and α-glucosidase inhibitory activity of ethanol extracts of leaves of different cultivars of jaboticaba[J]. Journal of Fruit Science, 2017, 34(11):1450-1457. (in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201711011 [6] 邱珊莲, 林宝妹, 洪佳敏, 等.树葡萄植株不同部位醇提物抗氧化及抑制α-葡萄糖苷酶活性的比较研究[J].果树学报, 2018, 35(3):311-318. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201803006QIU S L, LIN B M, HONG J M, et al. Comparative study of the antioxidant activity and the α-glucosidase inhibitory activity of the ethanol extracts from different parts of jaboticaba plant[J]. Journal of Fruit Science, 2018, 35(3):311-318. (in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gskx201803006 [7] SICHAEM J, AREE T, LUGSANANGARM K, et al. Identification of highly potent α-glucosidase inhibitory and antioxidant constituents from Zizyphus rugosa bark:enzyme kinetic and molecular docking studies with active metabolites[J]. Pharmaceutical Biology, 2017, 55(1):1436-1441. doi: 10.1080/13880209.2017.1304426 [8] XU Y R, NI J M, MENG Q G, et al. α-glucosidase inhibitors from Glycyrrhiza uralensis Fisch[J]. Journal of Chinese Pharmaceutical Sciences, 2006, 15(1):24-27. http://d.old.wanfangdata.com.cn/Periodical/zgyx-e200601006 [9] 商文婷, 盛占武, 谷满屯, 等.香蕉茎秆汁液抑制晚期糖基化终末产物活性评价[J].食品工业科技, 2016, 37(3):49-53. http://d.old.wanfangdata.com.cn/Periodical/spgykj201603014SHANG W T, SHENG Z W, GU M T, et al. Inhibition to advanced glycation end-products and activity evaluation of sap of banana stem[J]. Science and Technology of Food Industry, 2016, 37(3):49-53. (in Chinese) http://d.old.wanfangdata.com.cn/Periodical/spgykj201603014 [10] 杨荣武.生物化学原理[M].北京:高等教育出版社, 2012:132-149.YANG R W. Biochemical Theory[M]. Beijing:Higher Education Press, 2012:132-149. (in Chinese) [11] 陈建福, 林洵, 许商荣, 等.超声波辅助法提取白兰叶多酚的工艺研究[J].中国食品添加剂, 2016(7):150-156. doi: 10.3969/j.issn.1006-2513.2016.07.016CHEN J F, LIN X, XU S R, et al. Ultrasonic-assisted extraction of polyphenols from Michelia alba leaves[J]. China Food Additives, 2016(7):150-156. (in Chinese) doi: 10.3969/j.issn.1006-2513.2016.07.016 [12] 陈红惠, 吕静, 彭郦, 等.雪莲果叶中多酚的提取工艺研究[J].食品科学, 2009, 30(2):88-91. doi: 10.3321/j.issn:1002-6630.2009.02.016CHEN H H, LV J, PENG L, et al. Study on extraction technology of polyphenols from yacon (Smallanthus sonchifolius) leaves[J]. Food Science, 2009, 30(2):88-91. (in Chinese) doi: 10.3321/j.issn:1002-6630.2009.02.016 [13] 冯进, 曾晓雄, 李春阳.响应面法优化蓝莓叶多酚提取工艺[J].食品科学, 2013, 34(4):59-64. http://d.old.wanfangdata.com.cn/Periodical/spkx201304013FENG J, ZENG X X, LI C Y. Optimization of extraction process for polyphenols from blueberry leaves by response surface methodology[J]. Food Science, 2013. 34(4):59-64. (in Chinese) http://d.old.wanfangdata.com.cn/Periodical/spkx201304013 [14] 张素斌, 张欣, 李敏.龙利叶多酚提取条件优化及其抗氧化活性研究[J].河南农业科学, 2017, 46(2):148-152. http://d.old.wanfangdata.com.cn/Periodical/hnnykx201702031ZHANG S B, ZHANG X, LI M. Optimization of extraction conditions and antioxidant activities of polyphenols from Sauropus rostratus Miq.[J]. Journal of Henan Agriculture Science, 2017, 46(2):148-152. (in Chinese) http://d.old.wanfangdata.com.cn/Periodical/hnnykx201702031 [15] 陈智理, 杨昌鹏, 郭静婕, 等.番石榴叶多酚提取工艺的优化[J].南方农业学报, 2014, 45(10):1856-1860. doi: 10.3969/j:issn.2095-1191.2014.10.1856CHEN Z L, YANG C P, GUO J J, et al. Extraction process optimization of polyphenol from guava leaf[J]. Journal of Southern Agriculture, 2014, 45(10):1856-1860. (in Chinese) doi: 10.3969/j:issn.2095-1191.2014.10.1856 [16] DE B, BHANDARI K, SINGLA R K, et al. Chemometrics Optimized Extraction Procedures, Phytosynergistic Blending and in vitro Screening of Natural Enzyme Inhibitors Amongst Leaves of Tulsi, Banyan and Jamun[J]. Pharmacognosy Magazine, 2015, 11(S4):S522-532. [17] 林宝妹, 邱珊莲, 张少平, 等.不同品种嘉宝果叶片提取物的抗氧化活性[J].西北农林科技大学学报(自然科学版), 2018, 46(9):121-130. http://d.old.wanfangdata.com.cn/Periodical/xbnydxxb201809016LIN B M, QIU S L, ZHANG S P, et al. Antioxidant capacities of different leaf extracts of Jaboticaba cultivars[J]. Journal of Northwest A & F University(Natural Science Edition), 2018, 46(9):121-130. (in Chinese) http://d.old.wanfangdata.com.cn/Periodical/xbnydxxb201809016 [18] 张海均, 贾冬英, 孙慧, 等.石榴皮多酚提取物及纯化物对α-葡萄糖苷酶的抑制作用研究[J].天然产物研究与开发, 2012, 24(9):1253-1256. doi: 10.3969/j.issn.1001-6880.2012.09.023ZHANG H J, JIA D Y, SUN H, et al. Inhibitory Effect of polyphenol extract from pomegranate peel and its purified fractions on α-glucosidase activity[J]. Natural Product Research and Development, 2012, 24(9):1253-1256. (in Chinese) doi: 10.3969/j.issn.1001-6880.2012.09.023 [19] 高航, 单雪玉, 高延芬, 等.莲子红衣多酚对a-葡萄糖苷酶的抑制作用[J].食品科学技术学报, 2016, 34(6):36-40. http://d.old.wanfangdata.com.cn/Periodical/bjqgyxyxb201606007GAO H, SHAN X Y, GAOY F, et al. Inhibitory effect on α-glucosidase activity of polyphenol from red-skin of lotus seed[J]. Journal of Food Science and Technology, 2016, 34(6):36-40. (in Chinese) http://d.old.wanfangdata.com.cn/Periodical/bjqgyxyxb201606007 [20] 吕欢, 罗明琍, 方飞, 等.桑叶提取物抑制α-葡萄糖苷酶活性体系的优化及动力学研究[J].中药新药与临床药理, 2012, 23(1):42-44. doi: 10.3969/j.issn.1003-9783.2012.01.012LV H, LUO M L, FANG F, et al. Optimization of inhibitory reaction system of folium mori extracts on alpha-glucosidase activity and enzyme kinetics[J]. Traditional Chinese Drug Research & Clinical Pharmacology, 2012, 23(1):42-44.(in Chinese) doi: 10.3969/j.issn.1003-9783.2012.01.012