Bioprocessing and Biodetection Laboratory, Department of Food Science and Engineering, University of Tehran, Karaj, Iran.
J Sci Food Agric. 2022 Nov;102(14):6470-6480. doi: 10.1002/jsfa.12014. Epub 2022 Jul 18.
With production of over 6 million tonnes a year of sesame, its capsules are considered to be an unutilized waste. In this study, extraction of pectin from this novel source was optimized using a green method, and the functional and physiochemical characteristics of the resultant pectin were compared to commercial pectin.
In this study, the sesame capsule pectin (SCP) extraction conditions were optimized to reach maximum yield, and the results showed that the maximum pectin extraction yield (138 g kg ) was obtained under optimal conditions (microwave power 700 W, irradiation time 5 min, pH 1.5, and liquid-to-solid ratio 41.8 (mL g ). The results showed that the pectin was low methoxyl type with a galacturonic acid content of 670 g kg . The extracted pectin had a high molecular weight (341 kDa) and surface charge (34.09 ± 1.88 mV) and exhibited 66% DPPH radical scavenging. The obtained results from H-nuclear magnetic resonance and Fourier transform infrared spectra validated the presence of pectin structure in the extracted sample.
Sesame capsule pectin, when compared to commercial pectin, demonstrated better functional properties in terms of emulsifying properties, oil holding capacity, foaming capacity and antioxidant activity. SCP showed similar properties in comparison to its commercial counterpart, which suggests that it could well be considered as a new and suitable source for pectin extraction. © 2022 Society of Chemical Industry.
芝麻每年的产量超过 600 万吨，其外壳被认为是一种未被利用的废物。在这项研究中，使用绿色方法对这种新型来源的果胶进行了提取优化，并将得到的果胶的功能和物理化学特性与商业果胶进行了比较。
在这项研究中，优化了芝麻胶囊果胶（SCP）的提取条件，以达到最大产量，结果表明，在最佳条件下（微波功率 700 W、辐射时间 5 分钟、pH 值 1.5 和液固比 41.8（mL/g）），可以获得最大的果胶提取产量（138 g/kg）。结果表明，该果胶为低甲氧基果胶，半乳糖醛酸含量为 670 g/kg。提取的果胶具有高分子量（341 kDa）和表面电荷（34.09 ± 1.88 mV），并具有 66%的 DPPH 自由基清除能力。从 1 H 核磁共振和傅里叶变换红外光谱得到的结果验证了提取样品中存在果胶结构。
与商业果胶相比，芝麻胶囊果胶在乳化性能、持油能力、泡沫形成能力和抗氧化活性方面表现出更好的功能特性。SCP 的性能与商业果胶相似，这表明它很可能被认为是一种新的、合适的果胶提取来源。© 2022 化学工业协会。
