摘要
为研究匀强高压静电场(uniform high voltage electrostatic field,UHVEF)对绿芦笋嫩茎的保鲜效果,以绿芦笋为原料,探讨UHVEF处理对采后绿芦笋嫩茎贮藏品质指标的影响。经200 k V/m和250 k V/m对采后绿芦笋嫩茎进行持续15 d处理,每隔2 d取样,统计分析不同处理下其失重率、呼吸强度、可溶性糖含量和过氧化物酶(POD)活性等指标变化,试验设置对照组。结果表明:与对照组相比,采用适当的UHVEF处理对采后绿芦笋嫩茎进行处理,具有良好的保鲜效果。在不同匀强高压静电场的处理下,绿芦笋嫩茎的失重率、呼吸强度、可溶性糖含量和过氧化物酶活性等各项生理指标均表现出抑制性,场强越大,抑制效果越明显。失重率增长速度明显减缓;呼吸强度明显减弱,呼吸跃变时间推迟了4 d,到达峰值的时间推迟了9 d;可溶性含糖量存在先上升后下降趋势,后熟过程推迟2～4 d,后期下降速率平缓。POD酶活性呈先上升又下降的趋势,活性达到峰值点推迟了2 d。经UHVEF处理对采后绿芦笋失重率、呼吸强度、可溶性糖含量和POD酶活性的影响均差异性显著。研究结果为UHVEF用于采后绿芦笋嫩茎保鲜贮藏提供了理论依据。
The changes in the post-harvest physiology and storage quality of green asparagus treated by uniform high voltage electrostatic field(UHVEF)were investigated for researching and understanding the effect of UHVEF on the preservation quality of post-harvest green asparagus.Post-harvest green asparagus were treated by UHVEF at 200 kV/m and 250 kV/m at 2-days interval of for 15 days.The changes in weight loss,respiratory intensity,soluble sugar and activity of POD were determined and analyzed.This experiment set untreated samples.The result showed that compared with the untreated samples,appropriate UHVEF exhibited significantly the preservation effect on post-harvest green asparagus,and each biological index was inhibited,the higher the field intensity,the more obvious of the inhibition effect.UHVEF significantly slowed down the increase of weight loss,decreased respiratory intensity,the respiratory climacteric was delayed by 4 days,and the peak time was delayed by 9 days;the soluble sugar rose first and then decreased.The after-ripening process was delayed by 2~4 days,and the decline rate was gentle;the changes in the activity of POD were the same as the soluble sugar,and the peak time was delayed by 2 days.And the weight loss,respiratory intensity,soluble sugar and activity of POD showed significant differences at the level of 0.05.These results provide a theoretical basis for reinforcing the application of UHVEF processing to preservation of post-harvest green asparagus.
作者
陈立才
陈庆
黄芳
黄俊宝
舒时富
曾一凡
CHEN Li-cai;CHEN Qing;HUANG Fang;HUANG Jun-bao;SHU Shi-fu;ZENG Yi-fan(Institute of Agricultural Engineering,Jiangxi Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River,Ministry of Agriculture,P.R.China,Nanchang 330200,China;Chongqing University of Arts and Sciences,Yongchuan,Chongqing 402160,China;Agricultural Techniques Popularization Centre of Nanchang County,Jiangxi Province,Nanchang 330200,China;College of Polytechnics,Jiangxi Agricultural University,Nanchang 330045,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2018年第5期949-955,共7页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目(31460320)
江西省重点研发计划(20171BBF60019)
国家高层次人才特殊支持计划项目"万人计划青年拔尖人才项目"组厅字【2015】48号
江西省农业科学院创新基金(青年基金)项目(2016CQN011)~~
关键词
匀强高压静电场
绿芦笋嫩茎
贮藏
品质
uniform high voltage electrostatic field
post-harvest green asparagus
storage
quality
作者简介
陈立才(1985—),男,硕士,助理研究员,主要从事农业工程研究,clc-1985@163.com;通信作者:曾一凡,副教授,硕士生导师,jxndgxyzyf@163.com。
