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關鍵詞:牛肉;光氧化;蛋白;貯藏
Effects of Photooxidation and Oxygen on Beef Quality and Physicochemical Properties of Protein during Storage
CHEN Ziting, SUN Zhida*
(College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)
Abstract: In order to explore the effects of light and oxygen on the storage quality of beef and the physicochemical properties of myofibrillar protein, the pH, color, total volatile basic nitrogen (TVB-N) content, malondialdehyde (MDA) content, microstructure, peptide composition, carbonyl, sulfhydryl and dimeric tyrosine contents of protein in fresh beef were determined during 0–5 days of storage at 4 ℃. The results showed that under natural storage conditions (aerobic, natural light and 4 ℃), the TVB-N and MDA contents increased with storage time, exceeding the standard limit on day 5; the microstructure of beef changed with the occurrence of crosslinking and degradation fragments, and its quality deteriorated and was no longer fit for consumption. Anaerobic and dark conditions could delay beef quality deterioration. As storage time increased, the carbonyl content of myofibrillar protein gradually increased, and the sulfhydryl content gradually decreased. Oxygen could more accelerate the increase of carbonyl groups than light, while light was more effective in reducing sulfhydryl groups. In summary, fresh beef should not be stored for four days under light and aerobic conditions. Light and oxygen can promote protein oxidation and cross-linking aggregation.
Keywords: beef; photooxidation; protein; storage
DOI:10.7506/rlyj1001-8123-20230920-084
中圖分類號:TS251.1 " " " " " " " " " " " " " " " " " " " 文獻標志碼:A 文章編號:1001-8123(2023)10-0030-07
引文格式:
陳紫婷, 孫智達. 光氧化與氧氣對牛肉保鮮過程中品質以及蛋白理化性質的影響[J]. 肉類研究, 2023, 37(10): 30-36. DOI:10.7506/rlyj1001-8123-20230920-084. " "http://www.rlyj.net.cn
CHEN Ziting, SUN Zhida. Effects of photooxidation and oxygen on beef quality and physicochemical properties of protein during storage[J]. Meat Research, 2023, 37(10): 30-36. (in Chinese with English abstract) DOI:10.7506/rlyj1001-8123-20230920-084. " "http://www.rlyj.net.cn
牛肉由于其豐富的蛋白質等營養物質與絕佳的風味,是消費量排行第三的肉類,僅次于豬肉和禽肉。根據美國農業部統計,2022年牛肉及牛肉制品的總出口量為117.1 億美元,而中國市場高達21.4 億美元,成為僅次于韓國和日本的世界第三大出口國。隨著生活品質的提高和市場的全球化,新鮮牛肉的需求量越來越大,故延長新鮮牛肉的保質期變得越來越重要。……