期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Metal Salts Assisted Enzyme-Based Extraction of Stevioside from the Leaves of <i>Stevia rebaudiana</i>Bertoni 预览
1
作者 A. Bhaskar Rao Sara A. George +2 位作者 Sateesh Alavala H. M. Meshram K. Chandra Shekar 《生命科学与技术进展(英文)》 2015年第12期734-743,共10页
Stevioside, extracted from the leaves of Stevia rebaudiana Bertoni, is a natural, high intensity, lowcaloric sweetener with wide therapeutic activities. Conventional stevioside extraction methodologies involve the use... Stevioside, extracted from the leaves of Stevia rebaudiana Bertoni, is a natural, high intensity, lowcaloric sweetener with wide therapeutic activities. Conventional stevioside extraction methodologies involve the use of non-green solvents, supercritical fluids, microwaves, etc., however, all these processes are expensive, time-consuming and eco-unfriendly. Therefore an alternative process is desired for the isolation of stevioside. In this study, a novel enzyme-mediated extraction (EME) method has been developed. The dry stevia leaves were pre-treated with hydrolytic enzymes aided by transition metal salts (FeCl3). This was followed by pressurized hot water extraction (PHWE) to release stevioside. The crude extract was purified and clarified through multi-stage membrane filtration. The results confirm that metal salt-assisted cellulase pre-treatment enhanced the yield of stevioside to 72%, with 98% purity, which was higher in comparison to existing methods. Thus, the methodology developed establishes a simple, “green”, enzyme-mediated process for the efficient isolation of stevioside under economical and eco-friendly conditions. 展开更多
关键词 Stevia rebaudiana Enzyme-Based EXTRACTION Membrane Filtration STEVIOSIDE Natural SWEETENER
在线阅读 免费下载
上一页 1 下一页 到第
使用帮助 返回顶部 意见反馈