不同采收阶段的坛紫菜营养成分分析及预测模型  

The Nutrient Components Analysis and Prediction Model of Porphyra haitanensisat Different Harvest Periods

作　　者：陈晓晨 倪辉[1,2,3,4] 姜泽东 陈艳红[1,2,3] 杨远帆 杜希萍[1,2,3] Chen Xiaochen;Ni Hui;Jiang Zedong;Chen Yanhong;Yang Yuanfan;Du Xiping(College of Ocean Food and Biological Engineering,Jimei University,Xiamen 361021,Fujian;Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering,Xiamen 361021,Fujian;Research Center of Food Biotechnology of Xiamen City,Xiamen 361021,Fujian;Xiamen Ocean Vocational and Technical College,Xiamen 361021,Fujian)

机构地区：[1]集美大学海洋食品与生物工程学院,福建厦门361021 [2]福建省食品微生物与酶工程重点实验室,福建厦门361021 [3]厦门市食品生物工程技术研究中心,福建厦门361021 [4]厦门海洋职业技术学院,福建厦门361021

出　　处：《中国食品学报》2024年第8期371-384,共14页Journal of Chinese Institute Of Food Science and Technology

基　　金：福建省自然科学基金面上项目(2021J01833);福建省科技重大专项(2020NZ012015);国家自然科学基金重点项目(22038012)。

摘　　要：为获取不同采收阶段坛紫菜的区分方法,以4个采收阶段坛紫菜为原料,测定其色泽、营养物质、氨基酸等营养成分指标。依据坛紫菜采收阶段与营养成分指标的相关性建立模型,预测坛紫菜适宜的采收阶段。结果表明,随着坛紫菜采收阶段的增加,L*和b*值显著上升(P<0.05),而a*值呈下降趋势;蛋白质、必需氨基酸、非必需氨基酸和总氨基酸含量先减小后增加,脂肪和粗纤维分别呈现下降和上升趋势,灰分含量先上升后下降。此外,三水坛紫菜中鲜味氨基酸的TAV值最高,四水坛紫菜中甜味氨基酸的TAV值最高,只在四水坛紫菜中检测到C16∶1和C18∶3,采收后期坛紫菜的矿物质元素含量高于采收前期。根据除蛋氨酸外的必需氨基酸含量拟合的回归曲线,可准确鉴定不同海域的头水坛紫菜。本研究建立了坛紫菜采收阶段与相关品质指标的关联模型,为不同采收阶段坛紫菜的鉴定筛选及高值利用提供了技术参考。In this study,four harvest periods were used to determine and analyze the raw material properties such as color,basic nutrients,amino acids of P.haitanensis,and further according to the correlation between the harvest period and the quality index of nutrient components,the identification technique of different harvest periods of P.haitanensis were established.The results showed that as the harvest period increased,the L*and b*values increased significantly(P<0.05),while the a*values showed a decreasing trend;the protein,essential amino acid,non-essential amino acid and total amino acid contents first decreased and then increased,fat and crude fiber showed decreasing and increasing trends respectively,and ash content first increased and then decreased.In addition,the highest TAV values for the fresh amino acids were found in the third harvest period,the highest TAV values for the sweet amino acids were in the fourth harvest period,C16∶1 and C18∶3 were only detected in the fourth harvest period,and the mineral element content was higher in the late harvest than in the early harvest.The regression curve fitted to the essential amino acid content expert emethionin allows accurate identification of the first harvest period of P.haitanensis from different sea areas.This study established a correlation model between harvest periods and related quality indicators,which provides a theoretical and technical reference for the identification and screening of different harvest periods and high value utilization of P.haitanensis.

关 键 词：坛紫菜 采收阶段 营养成分 相关性分析 模型 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]