作　　者： ; ; ; ; ; ; ;

机构地区： 广州城市职业学院

出　　处： 《食品与机械》 2013年第3期202-205,共4页

摘　　要： 采用改性魔芋葡甘聚糖/壳聚糖共混膜液对甜玉米进行涂膜保鲜处理,研究甜玉米贮藏期间的硬度、果实失重率、呼吸强度、可溶性固形物含量等生理生化指标的变化,评价其保鲜效果。结果表明:经共混膜处理的甜玉米在贮藏期间,与对照组和空白组相比,硬度逐渐增大的趋势减慢;失重率逐渐增加的幅度相对较小;呼吸高峰明显推迟;可溶性固形物上升的速度要慢;VC含量下降趋势相似;淀粉含量上升的趋势推迟;总糖含量逐渐降低趋势变慢。试验证明,膜液涂膜处理能有效抑制甜玉米的呼吸强度,降低甜玉米失重率,延缓果实硬度增加,减缓其可溶性固形物、抗坏血酸和总糖含量的下降,推迟淀粉含量的升高,保鲜效果明显。 The modified konjac glucomannan/chitosan blend films so- lution was coated on sweet corn as preservation treatment. Changes of some physiological and biochemical indicators during storage of sweet corn, such as the hardness of fruit, weight loss rate, respira- tory intensity, content of soluble solids and evaluate the effect of preservation, were studied. The results show that： during the period of the blend film processing sweet corn in storage, compared with the control group and the blank group, the hardness of gradually increas- ing trend down~ weight loss rate increase gradually in amplitude isrelatively small; the respiratory peak was delayed; soluble solids in- creased slower; vitamin C content showed a trend similar to postpone the starch; content inereasing; the total sugar content decreased slowly. The blend films solution could effectively inhibit the respira- tory intensity of sweet corn, decreased the weight loss rate, delay the increase of fruit hardness , slowed down the decline of soluble solids, ascorbic acid and total sugar content, and delay the increase of starch content, improve the fresh-keeping effect.

关 键 词： 脱乙酰魔芋葡甘聚糖 壳聚糖 涂膜处理 甜玉米 保鲜

领　　域： [轻工技术与工程] [轻工技术与工程]