冻干牛初乳乳清粉的生化、介电和表面特性
Biochemical, dielectric and surface characteristics of freeze-dried bovine colostrum whey powder.
作者信息
Mehra Rahul, Kumar Shiv, Singh Rajat, Kumar Naveen, Rathore Deepshikha, Nayik Gulzar Ahmad, Alabdallah Nadiyah M, Monteiro António, Guiné Raquel F F, Kumar Harish
机构信息
Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, India.
Food Science & Technology, Maharishi Markandeshwar Deemed to be University, Mullana, Ambala 133207, India.
出版信息
Food Chem X. 2022 Jun 18;15:100364. doi: 10.1016/j.fochx.2022.100364. eCollection 2022 Oct 30.
Colostrum samples of recently registered cow breed "Himachali Pahari" were assorted from high altitude zone (901-2200 m). Prepared bovine colostrum whey powder (BCWP) was analysed for chemical composition, amino acids, minerals, surface morphology (SEM-EDS), FTIR and dielectric properties. Results showed that freeze-dried BCWP contained a considerable amount of nutritional parameters viz IgG (18.55 g/100 g), protein (71.72 g/100 g) and total amino acids (69.64 g/100 g). Additionally, the concentration of essential minerals was found to be adequate, and there was no presence of heavy metals. The BCWP exhibits good dielectric properties (resistance ∼57 M-Ω). SEM-EDS showed the broken up-wards layer structure with the uniform distribution of minerals on the surface. The FTIR spectra confirmed the presence of a higher proportion of β-sheets and β-turn structures in BCWP. Thus, on account of good functional and nutritive properties, BCWP could be foreseen as the future of functional food.
最近注册的奶牛品种“喜马偕尔帕哈里”的初乳样本采自高海拔地区（901 - 2200米）。对制备的牛初乳乳清粉（BCWP）进行了化学成分、氨基酸、矿物质、表面形态（扫描电子显微镜-能谱分析，SEM-EDS）、傅里叶变换红外光谱（FTIR）和介电性能分析。结果表明，冻干的BCWP含有大量营养参数，即免疫球蛋白G（IgG，18.55克/100克）、蛋白质（71.72克/100克）和总氨基酸（69.64克/100克）。此外，必需矿物质的浓度充足，且不存在重金属。BCWP表现出良好的介电性能（电阻约为57兆欧）。扫描电子显微镜-能谱分析显示表面有向上破碎的层状结构，矿物质分布均匀。傅里叶变换红外光谱证实BCWP中β-折叠和β-转角结构的比例较高。因此，鉴于良好的功能和营养特性，BCWP有望成为功能性食品的未来发展方向。
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