| 海藻酸钠涂膜及60Co-γ辐照处理对小枣的保鲜作用 |
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| 引用本文： | 杨伟,徐莹,樊燕,汪东风,孙寿魁.海藻酸钠涂膜及60Co-γ辐照处理对小枣的保鲜作用[J].食品工业科技,2012,33(3):343-347. |
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| 作者姓名： | 杨伟 徐莹 樊燕 汪东风 孙寿魁 |
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| 作者单位： | 1. 中国海洋大学食品科学与工程学院,山东青岛,266003
2. 山东省乐陵市金丝小枣生产经营管理办公室,山东乐陵,253614 |
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| 基金项目： | 海洋公益性行业科研专项经费项目(201005020-6) |
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| 摘 要： | 以全红期的山东省乐陵小枣为实验材料,分别进行60Co-γ辐照处理、海藻酸钠涂膜处理及二者结合处理后,与对照组同时于(2±0.5)℃冷库贮藏,并对低温贮藏过程中枣的失重率、总糖、还原糖、VC、可滴定酸含量及糖酸比的变化进行测定。结果表明:涂膜、辐照、涂膜+辐照处理均能有效减少水分散失,延缓VC和可滴定酸的下降,抑制糖酸比的上升,涂膜+辐照处理能保持较高的总糖、还原糖含量。其中,60Co-γ辐照+海藻酸钠涂膜处理于(2±0.5)℃冷库贮藏保鲜效果显著优于其他实验处理组,有助于提高乐陵小枣采后的低温贮藏品质。
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| 关 键 词： | 乐陵小枣 60Co-γ辐照 海藻酸钠 涂膜 保鲜 |
Effect of sodium alginate coating and 60Co-γ irradiation treatment on fresh-keeping of golden silk jujube |
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| YANG Wei,XU Ying,FAN Yan,WANG Dong-feng,SUN Shou-kui.Effect of sodium alginate coating and 60Co-γ irradiation treatment on fresh-keeping of golden silk jujube[J].Science and Technology of Food Industry,2012,33(3):343-347. |
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| Authors: | YANG Wei XU Ying FAN Yan WANG Dong-feng SUN Shou-kui |
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| Affiliation: | 1.College of Food Science and Engineering,Ocean University of China,Qingdao 266003,China;2.Office of Golden Silk Jujube Production and Operation Management,Leling 253614,China) |
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| Abstract: | Using golden silk jujube at full-red storage as materials,the effects of different preservation treatments(60Co-γ irradiation,coating with sodium alginate,and 60Co-γ irradiation+coating with sodium alginate,respectively) on the post-harvest fruit quality during cold storage were investigated,and the weight loss rate,total sugar content,reducing sugar content,VC content,and ratio of sugar to acid were determined.The results indicated that 60Co-γ irradiation,coating with sodium alginate and 60Co-γ irradiation+coating with sodium alginate all had an obvious fresh-keeping effect.The result showed that the three treatments reduced water loss,delayed the decrease of VC and titratable acid content,and the increase of sugar to acid ratio,and 60Co-γ irradiation+coating with sodium alginate maintained a relatively high content of total sugar and reducing sugar.Especially,the preservative effect of the 60Co-γ irradiation+coating with sodium alginate treatment was obviously superior to the control group,60Co-γ irradiation or coating with sodium alginate alone,which could obviously improve the quality of post-harvest cold storage of golden silk jujube. |
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| Keywords: | golden silk jujube 60Co-γ irradiation sodium alginate coating fresh-keeping |
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