本文主要研究内容
作者赵倩兮（2019）在《自发性气调包装与1-甲基环丙烯处理对‘阳丰’甜柿采后冷害的控制作用》一文中研究指出：‘阳丰’是我国甜柿主栽品种之一,其果实在常温下贮藏极易软化,低温贮藏可减缓其软化速度,但甜柿果实对低温敏感,冷藏时易发生冷害,从而失去其商品价值。自发性气调包装(MAP)依靠果实自身的呼吸作用使包装内部维持低氧气高二氧化碳的气体环境,可有效地降低果实生理代谢,延缓其成熟衰老。而1-甲基环丙烯(1-MCP)作为一种乙烯受体抑制剂,已被广泛应用于果实采后保鲜。本文以‘阳丰’甜柿为试材,以不同厚度的聚乙烯膜袋(PE)密封包装果实,贮藏在1±0.5℃,RH 90%±5%的冷库中,筛选出最适宜的MAP包装方式,再分别用MAP、1-MCP以及MAP+1-MCP复合处理,研究各处理对采后‘阳丰’果实冷害和品质的影响,以期为采后贮藏保鲜新技术开发提供参考。研究结果如下:1.0.03 mm和0.05 mm PE包装均可抑制‘阳丰’果实硬度和出汁率下降,延缓相对电导率和丙二醛(MDA)含量增加,还可以降低多酚氧化酶(PPO)和过氧化物酶(POD)活性,缓解果实褐变,抑制果肉凝胶化,降低冷害率和冷害指数,其中0.05 mm PE的效果更好。0.08 mm PE包装也可以抑制果实硬度下降,延缓相对电导率和MDA含量增加,维持果肉出汁率,但在贮藏后期部分果实在冷库中出现非冷害导致的褐变现象(冷害症状需在常温下放置一段时间才会呈现,并伴随着果肉凝胶化),降低果实外观品质。2.MAP、1-MCP和MAP+1-MCP处理均可有效延缓‘阳丰’果实冷害的发生,降低冷害率和冷害指数,抑制果实L~*值下降,降低贮藏过程中的质量损失,还可抑制果肉组织变形溃散。其中MAP和MAP+1-MCP处理效果相近,并优于1-MCP处理。3.MAP、1-MCP和MAP+1-MCP处理还可抑制果实硬度、总酚和抗坏血酸含量的下降,降低乙烯释放速率,延缓相对电导率和MDA含量的上升,抑制LOX、PPO和POD活性,减少出库时的腐烂率。其中MAP与1-MCP复合处理的效果优于MAP和1-MCP单独处理。4.与对照相比,MAP、1-MCP和MAP+1-MCP处理均可抑制果肉出汁率的下降,减轻冷害引起的果肉凝胶化现象。其中1-MCP处理促进了果胶降解,并提高了多聚半乳糖醛酸酶(PG)活性,而MAP和MAP+1-MCP处理抑制果胶降解,同时在贮藏前期抑制PG活性上升,后期抑制其下降。MAP和MAP+1-MCP处理对果肉凝胶化抑制效果优于1-MCP处理。因此,MAP包装对保持‘阳丰’甜柿果实采后品质,缓解冷害有明显的效果,其中0.05 mm PE包装效果最为显著,而MAP、1-MCP和MAP+1-MCP处理相比较,MAP+1-MCP复合处理在缓解‘阳丰’果实采后冷害上存在部分叠加效应。
Abstract
‘yang feng ’shi wo guo tian shi zhu zai pin chong zhi yi ,ji guo shi zai chang wen xia zhu cang ji yi ruan hua ,di wen zhu cang ke jian huan ji ruan hua su du ,dan tian shi guo shi dui di wen min gan ,leng cang shi yi fa sheng leng hai ,cong er shi qu ji shang pin jia zhi 。zi fa xing qi diao bao zhuang (MAP)yi kao guo shi zi shen de hu xi zuo yong shi bao zhuang nei bu wei chi di yang qi gao er yang hua tan de qi ti huan jing ,ke you xiao de jiang di guo shi sheng li dai xie ,yan huan ji cheng shou cui lao 。er 1-jia ji huan bing xi (1-MCP)zuo wei yi chong yi xi shou ti yi zhi ji ,yi bei an fan ying yong yu guo shi cai hou bao xian 。ben wen yi ‘yang feng ’tian shi wei shi cai ,yi bu tong hou du de ju yi xi mo dai (PE)mi feng bao zhuang guo shi ,zhu cang zai 1±0.5℃,RH 90%±5%de leng ku zhong ,shai shua chu zui kuo yi de MAPbao zhuang fang shi ,zai fen bie yong MAP、1-MCPyi ji MAP+1-MCPfu ge chu li ,yan jiu ge chu li dui cai hou ‘yang feng ’guo shi leng hai he pin zhi de ying xiang ,yi ji wei cai hou zhu cang bao xian xin ji shu kai fa di gong can kao 。yan jiu jie guo ru xia :1.0.03 mmhe 0.05 mm PEbao zhuang jun ke yi zhi ‘yang feng ’guo shi ying du he chu zhi lv xia jiang ,yan huan xiang dui dian dao lv he bing er quan (MDA)han liang zeng jia ,hai ke yi jiang di duo fen yang hua mei (PPO)he guo yang hua wu mei (POD)huo xing ,huan jie guo shi he bian ,yi zhi guo rou ning jiao hua ,jiang di leng hai lv he leng hai zhi shu ,ji zhong 0.05 mm PEde xiao guo geng hao 。0.08 mm PEbao zhuang ye ke yi yi zhi guo shi ying du xia jiang ,yan huan xiang dui dian dao lv he MDAhan liang zeng jia ,wei chi guo rou chu zhi lv ,dan zai zhu cang hou ji bu fen guo shi zai leng ku zhong chu xian fei leng hai dao zhi de he bian xian xiang (leng hai zheng zhuang xu zai chang wen xia fang zhi yi duan shi jian cai hui cheng xian ,bing ban sui zhao guo rou ning jiao hua ),jiang di guo shi wai guan pin zhi 。2.MAP、1-MCPhe MAP+1-MCPchu li jun ke you xiao yan huan ‘yang feng ’guo shi leng hai de fa sheng ,jiang di leng hai lv he leng hai zhi shu ,yi zhi guo shi L~*zhi xia jiang ,jiang di zhu cang guo cheng zhong de zhi liang sun shi ,hai ke yi zhi guo rou zu zhi bian xing hui san 。ji zhong MAPhe MAP+1-MCPchu li xiao guo xiang jin ,bing you yu 1-MCPchu li 。3.MAP、1-MCPhe MAP+1-MCPchu li hai ke yi zhi guo shi ying du 、zong fen he kang huai xie suan han liang de xia jiang ,jiang di yi xi shi fang su lv ,yan huan xiang dui dian dao lv he MDAhan liang de shang sheng ,yi zhi LOX、PPOhe PODhuo xing ,jian shao chu ku shi de fu lan lv 。ji zhong MAPyu 1-MCPfu ge chu li de xiao guo you yu MAPhe 1-MCPchan du chu li 。4.yu dui zhao xiang bi ,MAP、1-MCPhe MAP+1-MCPchu li jun ke yi zhi guo rou chu zhi lv de xia jiang ,jian qing leng hai yin qi de guo rou ning jiao hua xian xiang 。ji zhong 1-MCPchu li cu jin le guo jiao jiang jie ,bing di gao le duo ju ban ru tang quan suan mei (PG)huo xing ,er MAPhe MAP+1-MCPchu li yi zhi guo jiao jiang jie ,tong shi zai zhu cang qian ji yi zhi PGhuo xing shang sheng ,hou ji yi zhi ji xia jiang 。MAPhe MAP+1-MCPchu li dui guo rou ning jiao hua yi zhi xiao guo you yu 1-MCPchu li 。yin ci ,MAPbao zhuang dui bao chi ‘yang feng ’tian shi guo shi cai hou pin zhi ,huan jie leng hai you ming xian de xiao guo ,ji zhong 0.05 mm PEbao zhuang xiao guo zui wei xian zhe ,er MAP、1-MCPhe MAP+1-MCPchu li xiang bi jiao ,MAP+1-MCPfu ge chu li zai huan jie ‘yang feng ’guo shi cai hou leng hai shang cun zai bu fen die jia xiao ying 。
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论文作者分别是来自西北农林科技大学的赵倩兮，发表于刊物西北农林科技大学2019-07-11论文，是一篇关于自发性气调包装论文,甲基环丙烯论文,甜柿论文,冷害论文,西北农林科技大学2019-07-11论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自西北农林科技大学2019-07-11论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：自发性气调包装论文; 甲基环丙烯论文; 甜柿论文; 冷害论文; 西北农林科技大学2019-07-11论文;