含有乳酸细菌的干葡萄末作为益生菌和抗糖尿病增值粉的潜在来源
Larisa Anghel1, Adelina Ștefania Milea1, Oana Emilia Constantin1
1Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, 800008 Galați, Romania.
Food chemistry: X
|October 2, 2023
概括
红外 (IR) 干燥比对流式干燥 (CD) 更有效,用于含有益生菌的葡萄末,减少干燥时间并保存生物活性化合物. 这种方法还可以提高益生菌的存活率和抗氧化活性.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物技术是生物技术.
- 生物化学 生物化学
背景情况:
- 葡萄是一种丰富的生物活性化合物的来源,包括安东素.
- 益生菌可以增强食品的健康益处.
- 干燥方法显著影响生物活性化合物和益生菌的质量和稳定性.
研究的目的:
- 为了比较对流式干燥 (CD) 和红外干燥 (IR) 用益生菌干燥葡萄汁.
- 评估干燥方法对干燥动力学,生物活性化合物保留和益生菌生存的影响.
- 评估葡萄末提取物对α-氨基酶活性的影响.
主要方法:
- 使用CD和IR方法干燥含有益生菌的葡萄末.
- 使用Page模型分析了干燥动力学.
- 用染色学分析确定了安托西亚宁含量.
- 益生菌的存活率在储存14天后进行了评估.
- 使用IC50值测量了α-氨酶抑制.
主要成果:
- 与50°C的CD相比,红外干燥可将干燥时间缩短高达14.3%.
- 在IR干燥中,有效的湿度扩散率高于CD.
- 鉴定了28种安东,其中丁-3-O-单糖化物占主导地位.
- 在4°C保存14天后,益生菌的存活率达到7.0 log CFU/g.
- 红外线提取物对α-氨酶的结合常数较低,IC50值较高,表明抗氧化能力更大.
结论:
- 与CD相比,红外干燥是一种更有效的方法,可以在葡萄末中保存生物活性化合物和益生菌活力.
- 这项研究为优化功能性食品成分的干燥过程提供了宝贵的见解.
- 葡萄末提取物具有显著的抗氧化特性,而红外提取物表现出更高的疗效.
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