Ali Barkat, Khan Kiran Yasmin, Majeed Hamid, Xu Lie, Bakry Amr M, Raza Husnain, Shoaib Muhammad, Wu Fengfeng, Xu Xueming
1National Agricultural Research Centre, Park Road, Islamabad, 44000 Pakistan.
2The State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122 China.
J Food Sci Technol. 2019 Apr;56(4):1683-1695. doi: 10.1007/s13197-018-3526-y. Epub 2019 Mar 6.
Enzyme modified white cheese (EMWC) was produced to use as flavouring ingredient. White cheese curd coupled with low fat was hydrolysed using combination of proteinases/peptidase to produce a range of proteolysed products followed by lipolysis. The results revealed that lowering pH 5.6 known to impart flavour strength of cheese. The inclusion of enzyme preparations significantly elevated free amino acids and free fatty acids. Developed EMWC had relatively higher levels of volatiles and improved sensory characteristics including less negative attributes such as, astringent, bitter, pungent, rancid, smoky, and more positive attributes, such as the strength of buttery, sweaty, caramel and nutty notes. Spray-dried EMWC powders had low moisture content and water activity values whereas, scanning electron micrographs showed spherical with a uniform distribution and large microparticles size. Because consumers like low fat products with cheese flavour, EMWCs are important products. Thus, process demonstrates the potential to be a cost-effective to produce EMWC flavour as ingredient and may suited to the products in which added.
酶改性白奶酪(EMWC)被生产用作调味成分。将低脂白奶酪凝乳与蛋白酶/肽酶组合使用,进行水解以产生一系列蛋白水解产物,随后进行脂肪水解。结果表明,将pH降低至5.6可赋予奶酪风味强度。酶制剂的加入显著提高了游离氨基酸和游离脂肪酸的含量。所开发的EMWC具有相对较高的挥发性水平和改善的感官特性,包括减少诸如涩味、苦味、辛辣味、酸败味、烟熏味等负面属性,以及增加诸如黄油味、汗味、焦糖味和坚果味等正面属性。喷雾干燥的EMWC粉末具有低水分含量和水分活度值,而扫描电子显微镜图像显示为球形,分布均匀且微粒尺寸较大。由于消费者喜欢具有奶酪风味的低脂产品,因此EMWC是重要的产品。因此,该工艺显示出作为一种具有成本效益的生产EMWC风味成分的潜力,并且可能适用于添加了该成分的产品。