海藻提取物对水培生菜生长、品质及抗氧化能力的影响  

Effects of seaweed extract on growth,quality and antioxidant capacity of hydroponic lettuce

作　　者：王海英[1] 郑志红 丛海花 陶传涛 李振兴 王金凤 雷惠雯 张杰 WANG Hai-ying;ZHENG Zhi-hong;CONG Hai-hua;TAO Chuan-tao;LI Zhen-xing;WANG Jin-feng;LEI Hui-wen;ZHANG Jie(Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Laboratory for Marine Drugs and Biological Products,Pilot National Laboratory for Marine Science and Technology,Qingdao 266071,China;College of Food Science and Engineering,Dalian Ocean University,Dalian 116023,China;Langfang Yinliang Agricultural Development Co.,Ltd.,Yongqing 065600,China;Yongqing County Bureau of Agriculture and Rural Areas,Yongqing 065600,China;Agricultural and rural Department of Hebei Province,Shijiazhuang 050011,China)

机构地区：[1]中国水产科学研究院黄海水产研究所/青岛海洋科学与技术试点国家实验室海洋药物与生物制品功能实验室,山东青岛266071 [2]大连海洋大学食品科学与工程学院,辽宁大连116023 [3]廊坊垠良农业开发有限公司,河北永清065600 [4]永清县农业农村局,河北永清065600 [5]河北省农业农村厅,河北石家庄050011

出　　处：《河北渔业》2022年第9期9-14,共6页

基　　金：国家重点研发计划项目(2019YFD0901902);河北省重点研发计划项目(21323201D)。

摘　　要：为研究海藻提取液对水培生菜生长发育及品质的影响,用不同稀释倍数的海藻提取液(S-300、S-500、S-800)对水培生菜进行叶面喷施处理,以清水作为对照(CK),测定水培生菜的生长指标及品质指标。结果表明:S-500组水培生菜的株高、茎粗及最大根长均高于CK组(P>0.05),叶片数目显著高于CK组(P<0.05);根冠比显著高于CK组17.2%(P<0.05);可溶性糖含量、可溶性蛋白含量、Vc含量及花青素含量分别比CK组高37.2%、27.3%、75.2%和131.1%(P<0.05),硝酸盐含量相比CK组降低19.5%;过氧化氢酶、过氧化物酶和超氧化物歧化酶酶活性分别提高29.3%、20.8%和91.8%;叶绿素和类胡萝卜素含量分别增加136.6%和130.4%。综上,海藻提取液对水培生菜生长发育、品质特征及抗氧化酶活性都有显著的促进作用,稀释500倍的海藻提取液对水培生菜促生长及品质提高效果较佳。In order to study the effect of seaweed extract on the growth,development and quality of hydroponic lettuce,the leaves of hydroponic lettuce were sprayed with seaweed extract with different dilution times(S-300,S-500 and S-800),and the growth index and quality index of hydroponic lettuce were measured with clear water as control(CK).The results showed that the plant height,stem diameter and maximum root length of S-500 group were higher than those of CK group(P>0.05),and the number of leaves was significantly higher than that of CK group(P<0.05).The root shoot ratio was significantly higher than that of CK group by 17.2%(P<0.05).The contents of soluble sugar,soluble protein,Vc and anthocyanin in CK group were 37.2%,27.3%,75.2%and 131.1%higher than those in CK group,respectively(P<0.05),and the content of nitrate decreased by 19.5%.The activities of catalase,peroxidase and superoxide dismutase increased by 29.3%,20.8%and 91.8%,respectively.The contents of chlorophy ll and carotenoid increased by 136.6%and 130.4%,respectively.In conclusion,seaweed extract can significantly promote the growth and development,quality characteristics and antioxidant enzyme activity of hydroponic lettuce,among which the seaweed extract diluted 500 times has a better effect on promoting the growth and quality of hydroponic lettuce.

关 键 词：海藻提取物 水培 生菜 叶绿素 抗氧化酶 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]