红外辅助提取紫玉米穗中多酚及其花色苷在泡菜制作中的应用
Optimization of Polyphenols' Recovery from Purple Corn Cobs Assisted by Infrared Technology and Use of Extracted Anthocyanins as a Natural Colorant in Pickled Turnip.
机构信息
Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, University of Valencia, 46100 Valencia, Spain.
Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon.
出版信息
Molecules. 2022 Aug 16;27(16):5222. doi: 10.3390/molecules27165222.
An ecofriendly extraction technology using infrared (IR) irradiation was applied to purple corn cobs to enhance polyphenol recovery for the first time. The IR extraction efficiency was compared to that of the water bath (WB) method. Response surface methodology (RSM) using a central composite design was conducted to determine the effect of the experimental conditions (extraction time and treatment temperature) and their interactions on the total polyphenol and anthocyanin yields. Optimal extraction of total phenolic compounds (37 mg GAE/g DM) and total monomeric anthocyanins (14 mg C3G/g DM) were obtained at 63 °C for 77 min using IR as an extraction technique and water as a solvent. HPLC revealed that the recovery of peonidin 3-O-glucoside and cyanidin 3-O-glucoside was enhanced by 26% and 34%, respectively, when using IR. Finally, purple corn cobs' spray-dried extract was proven to be an important natural colorant of pickled turnip. It offers great potential for use as a healthy alternative to the carcinogenic rhodamine B synthetic dye, which was banned.
首次采用红外（IR）照射的环保提取技术从紫玉米穗中提取多酚以提高多酚的回收率。将 IR 提取效率与水浴（WB）方法进行了比较。采用中心复合设计的响应面法（RSM）研究了实验条件（提取时间和处理温度）及其相互作用对总多酚和花青素产率的影响。使用 IR 作为提取技术，水作为溶剂，在 63°C 下提取 77 分钟，可获得最佳的总酚类化合物（37 mg GAE/g DM）和总单体花青素（14 mg C3G/g DM）提取效果。HPLC 结果表明，使用 IR 时，天竺葵苷 3-O-葡萄糖苷和矢车菊素 3-O-葡萄糖苷的回收率分别提高了 26%和 34%。最后，紫玉米穗的喷雾干燥提取物被证明是腌制萝卜的一种重要天然色素。它为使用致癌性罗丹明 B 合成染料（已被禁用）的替代品提供了很大的潜力。
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