不同干燥方式燕麦蛋白的性质及对肌原纤维蛋白凝胶特性的影响
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北京工商大学人才培养质量建设- 一流专业建设- 食品科学与工程(年初)项目(19002020119);山西农谷建设科研专项项目(SXNGJSKYZX201902)。


Properties of Oat Proteins Treated with Different Drying Methods and Effects on Gel Properties of Myofibrillar Protein
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Beijing Technology and Business University Personnel Training Quality Construction-First-class Specialty Construction-Food Science and Engineering (early) Project (19002020119); Shanxi Agricultural Valley Construction Scientific Research Project (SXNGJSKYZX201902).

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    摘要:

    为研究添加不同干燥方式处理的燕麦蛋白对肉类食品质构等特性的影响,采用4种不同干燥方法(喷雾干燥、冷冻干燥、真空干燥和微波干燥)处理燕麦蛋白,考察不同干燥方法对燕麦蛋白结构和性质的影响,以及添加不同干燥方法处理的燕麦蛋白对肌原纤维蛋白凝胶特性的影响。结果表明:不同干燥方法对燕麦蛋白的结构及性质影响不同,与喷雾干燥处理的燕麦蛋白相比较,冷冻和微波干燥处理的燕麦蛋白游离氨基和羰基含量显著下降;红外光谱分析结果显示,相比较于冷冻、真空和微波干燥,喷雾干燥处理的燕麦蛋白α-螺旋和β-转角结构含量无显著性差异,但β-折叠结构含量下降而无规则卷曲结构含量上升;荧光光谱分析结果表明,相比较于冷冻和微波干燥,喷雾和真空干燥处理的燕麦蛋白的最大发射波长出现了红移;微波干燥处理的燕麦蛋白表面疏水性最低且溶解性最好。不同干燥方法处理的燕麦蛋白对肌原纤维蛋白的凝胶性质影响不同,与肌原纤维蛋白相比,添加冷冻、真空和微波干燥处理的燕麦蛋白未改变凝胶温度,而添加喷雾干燥处理的燕麦蛋白凝胶温度降低了2℃; 添加微波、真空和喷雾干燥处理的燕麦蛋白均提高了凝胶的G′ 和G″,表明混合凝胶的弹性和黏性提高,而添加冷冻干燥处理的燕麦蛋白降低了凝胶的黏性和弹性; 扫描电子显微镜结果显示,喷雾干燥处理的燕麦蛋白与肌原纤维蛋白形成的混合凝胶网络具有更为紧密的网状结构,且孔径相对较小,而冷冻干燥处理的燕麦蛋白与肌原纤维蛋白形成的混合凝胶网络较为疏松,孔径相对较大。本研究旨在为功能型肉制品,包括谷物-肉类乳化型肉制品的开发提供一定的技术参数。

    Abstract:

    In order to study the effects of oat protein treated with different drying methods on meat product texture, four different drying methods (spray drying, freeze drying, vacuum drying and microwave drying) were used to treat oat protein, and their effects on the structure and properties of oat protein were investigated. Furthermore, the effects of addition of oat protein treated with different drying methods on the gel characteristics of myofibrillar protein were explored. The results showed that different drying methods had various effects on the structure and properties of oat protein, the free amino and carbonyl contents of oat proteins treated with freeze and microwave drying methods were significantly decreased compared with those of oat protein treated with spray drying method. The results of fourier transform infrared spectroscopy analysis showed that compared with oat protein treated with freeze, vacuum and microwave drying methods, no significant difference were observed in the content of α-helical and β-turned structure of oat protein treated with spray drying method, but the content of β-sheet structure decreased while the content of irregularly curled structure increased. The results of fluorescence spectroscopy showed that the maximum emission wavelengths of oat proteins treated with spray and vacuum drying methods were red-shifted compared with those of oat proteins treated with freeze and microwave drying methods. The surface hydrophobicity of oat protein treated with microwave drying method was the lowest while solubility was the best. Oat proteins treated with different drying methods had different influence on the gel properties of myofibrillar proteins. Compared with myofibrillar proteins, the gel temperature of oat proteins treated with freezing, vacuum and microwave drying methods had no change, while the gel temperature of spray dried oat proteins decreased by 2℃. The addition of oat proteins treated with microwave, vacuum and spray drying methods increased the gel G′ and G″, indicating increased elasticity and viscosity of the mixed gels, while the addition of oat proteins treated with freeze drying method reduced the viscosity and elasticity of the gels. The results of scanning electron microscopy showed that the gel network formed by mixing spray-dried oat protein and myofibrillar protein had a tighter mesh structure and relatively smaller pore size, while the gel network formed by freeze-dried oat protein and myofibrillar protein was looser and had relatively larger pore size. This study aims to provide certain technical parameters for the development of functional meat products, including grain-meat emulsion type meat products.

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卢亚东,张成楠,李秀婷,陈振家,王愈,张治华,牛晓峰.不同干燥方式燕麦蛋白的性质及对肌原纤维蛋白凝胶特性的影响[J].食品科学技术学报,2021,39(6):53-63.

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  • 收稿日期:2021-10-27
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  • 在线发布日期: 2021-12-29
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