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兼具抗氧化及鮮度指示特性的結(jié)冷膠基活性智能膜研究
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國家重點研發(fā)計劃重點專項 (2019YFD0901604)


Preparation and Applications of Active and Intelligent Film Based on Gellan Gum
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    摘要:

    利用低?;Y(jié)冷膠和紫甘藍花青素制備了兼具抗氧化活性和鮮度指示特性的活性智能膜,考察了結(jié)冷膠-紫甘藍花青素成膜溶液的流變特性,以及活性智能膜的理化性質(zhì)、抗氧化活性、酸度敏感性和微觀結(jié)構(gòu)演化。此外,還考察了活性智能膜在大黃魚新鮮度指示與豬油保鮮中的應(yīng)用性能。結(jié)果表明,在降溫過程中,成膜溶液經(jīng)歷了液-固轉(zhuǎn)變?;ㄇ嗨刭|(zhì)量濃度越高,成膜溶液的儲能模量和損耗模量越大,凝膠溫度越高。隨著花青素質(zhì)量濃度的增加,活性智能膜的含水率和抗拉強度逐漸減小,厚度、水蒸氣透過率和斷裂伸長率則逐漸增大?;ㄇ嗨氐募尤胭x予了活性智能膜良好的抗氧化活性與酸度敏感性,并可提高膜的熱穩(wěn)定性?;钚灾悄苣た捎糜诖簏S魚新鮮度指示且可有效延緩豬油的氧化酸敗。

    Abstract:

    Food packaging performs three basic functions: containment, preservation of quality, and protection from environmental, physical, and microbiological factors. In recent times, the role of packaging has increased beyond its basic function with changing consumer preferences and expectations. Now, it is also contributing towards extending the shelf life and acts as a quality indicator of the packed food products. The focus is also on the development of active and intelligent packaging. An active and intelligent film with antioxidant activity and freshness indicator was prepared by using low-acyl gellan gum and red cabbage anthocyanins. The rheological behaviors of gellan gum-red cabbage anthocyanin film forming solution were studied. Moreover, the effect of anthocyanin concentration on the physicochemical properties, antioxidant activity, pH color response properties and microstructure of film was measured. In addition, the application performance of film in freshness indication of large yellow croaker and lard preservation were carried out. The results of dynamic measurement showed that the film-forming solution underwent a liquid-solid transition during the cooling process. The dynamic modulus and gelation temperature of film forming solution was increased with the increase of anthocyanin concentration. With the increase of anthocyanin concentration, the moisture content and tensile strength were gradually decreased, while the thickness, water vapor permeability and elongation at break were increased gradually. The addition of anthocyanins endowed the film with good anti-oxidation and pH response properties, and it can improve the thermal stability of the film. The changes of lard quality and freshness indexes of large yellow croaker (volatile base total nitrogen content, total number of colonies and thiobarbituric acid value) and the color difference ΔE of the active intelligent film during storage were investigated. Correlation analysis showed that the color difference of the film had a significant correlation with each freshness index of large yellow croaker. The active and intelligent film can effectively delay the oxidative rancidity of lard, and it had excellent preservation performance for lard.

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陳青,岳志敏,邢加偉,俞創(chuàng)勛,潘玲,胡紅.兼具抗氧化及鮮度指示特性的結(jié)冷膠基活性智能膜研究[J].農(nóng)業(yè)機械學(xué)報,2022,53(7):370-378. CHEN Qing, YUE Zhimin, XING Jiawei, YU Chuangxun, PAN Ling, HU Hong. Preparation and Applications of Active and Intelligent Film Based on Gellan Gum[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(7):370-378.

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  • 收稿日期:2022-04-03
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  • 在線發(fā)布日期: 2022-07-10
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