来自Coix lachryma-jobi L的序列酶改性粉的结构和消化能力
Xueli Liu1, Xin Li1, Jie Zhou1
1Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, PR China.
序列酶修饰改变了Coix lachryma-jobi L.粉的结构和特性. 最佳的转糖酶治疗时间最大限度地提高了缓慢消化的粉,并最大限度地降低了耐性粉含量.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
背景情况:
- 粉修饰对于定制食品和材料特性至关重要.
- 序列酶修饰为改变粉特性提供了一种新的方法.
研究的目的:
- 研究序列性酶修改,特别是转糖酶 (TG) 处理时间对Coix lachryma-jobi L.粉的物理化学性质的影响.
- 为了优化TG处理的持续时间,以获得所需的粉属性,如可消化性和结晶性.
主要方法:
- 使用α-氨酶 (AA),β-氨酶 (BA),转糖酶 (TG) 和氨酶 (Pull) 对Coix lachryma-jobi L.粉进行序列酶处理.
- 对粉颗粒形态,粉含量,可溶性,膨胀潜力,透明度,相对晶度和可消化性 (SDS和RS) 的分析.
- 对TG处理时间对物理化学性质的影响的评估.
主要成果:
- 酶修饰改变了粉颗粒的形态,造成裂,痕和碎片结构.
- 与原生粉相比,改性粉呈现出更高的粉含量,溶解度,扩张潜力和透明度.
- TG治疗时间影响了相对结晶度,SDS,RS和峰值凝化温度,TG 12h显示最低的RS (40.65%) 和最高的SDS (55.93%).
结论:
- 序列酶修饰有效地改变了Coix lachryma-jobi L.粉的物理化学特性.
- 转糖酶治疗时间是控制粉消化性和结晶性的关键因素.
- 优化的序列酶修饰具有开发具有增强营养和功能性质的粉的潜力.
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