包裝材料對新疆喀什地區多浪羊肉貯藏品質的影響

向延菊 張振 王偉華 熊素英 李小華

摘要 以新疆喀什地區多浪羊的后腿紅肉為試材，用14 絲聚酯透明真空袋、16 絲聚酯透明真空袋和20絲純鋁箔平口真空袋包裝羊肉，0 ℃下冷藏，每2 d檢測其品質指標，研究包裝材料對其貯藏品質的影響。結果表明，隨著貯藏時間的延長，各包裝處理羊肉其紅度a*值逐漸減小、色澤變暗、持水性變差、感官品質下降;羊肉的失重率、蒸煮損失率、pH、揮發性鹽基氮含量及菌落總數逐漸升高，羊肉品質變差;貯藏至10 d時，3種包裝袋包裝的羊肉pH均小于6.0，揮發性鹽基氮含量均低于150 mg/kg，菌落總數都在6 lg（CFU/g） 以下，圴符合二級鮮肉標準;3種包裝中，20 絲純鋁箔平口真空包裝袋包裝的羊肉感觀品質最好，其紅度a*值最高，失重率最小，貯藏前期（8 d前）蒸煮損失率及pH均較低，有利于羊肉品質的保持，但其在抑制揮發性鹽基氮含量和菌落總數方面與14絲、16絲聚酯透明真空袋相比沒有明顯優勢;16絲聚酯透明真空袋比14絲聚酯透明真空袋包裝更有利于保持羊肉品質。

關鍵詞 包裝材料;羊肉;多浪羊;貯藏品質;感觀品質;理化品質

中圖分類號 TS206.4文獻標識碼 A

文章編號 0517-6611（2019）11-0184-04

doi：10.3969/j.issn.0517-6611.2019.11.053

開放科學（資源服務）標識碼（OSID）：

Abstract Taking red mutton in hind leg of Duolang sheep in Kashgar region of Xinjiang as test materials，the mutton were packed with 14 one percent mm of polyester transparent vacuum bag，16 one percent mm of polyester transparent vacuum bag and 20 one percent mm of pure aluminum foil flat vacuum bag and stored in refrigerator at 0 ℃ .The quality indices of mutton was measured every 2 days to study the influences of packaging materials on the storage quality of mutton.The results showed that： with the extension of storage time，the red degree a* value gradually decreased，color and lustre became dimmer and dimmer，waterholding capacity decreased and sensory quality got worse，and weightless rate，cooking loss rate，pH value，content of volatile salt nitrogen and total colony number of the mutton gradually increased，and the mutton quality deteriorated during storage.On the 10th day in the storage process，pH value of the mutton packed with 3 kinds of packaging bags was less than 6.0，the content of volatile base nitrogen of them was less than 150 mg/kg，the total number of colonies of them was below 6 lg （CFU/g），which conformed to the security standard of the secondary fresh meat.Among 3 kinds of packaging materials，the mutton packed with 20 one percent mm of aluminum foil bag had the best sensory quality，the highest red degree a* value，the least weightloss ratio，and lower cooking lose rate and pH value within 8 days in storage，which was beneficial to maintain its quality.But it had no obvious advantages from two aspects of reducing the content of volatile salt nitrogen and total number of colony，compared with 14 and 16 one percent mm of polyester pouch.As for the same packaging material，the thicker the bags were，the more beneficial to keep the mutton quality was，namely it was better to maintain the quality of mutton packed with 16 one percent mm than 14 one percent mm of polyester bags.

Key words Packaging materials;Mutton;Duolang Sheep;Storage quality;Sensory quality;Physical and chemical properties

基金項目 新疆生產建設兵團工業及高新技術科技攻關與成果轉化計劃項目（2015AB017）。

作者簡介 向延菊（1970—），女，土家族，湖南石門人，副教授，碩士，從事農產品貯藏與加工研究。

收稿日期 2018-11-25

新疆塔克拉瑪干沙漠的西南邊緣、葉爾羌河流域的喀什地區是多浪羊的盛產區，該羊體大、產肉多、肉質鮮嫩，是新疆的一個優良肉脂兼用型綿羊品種[1]。……