纳米复合膜对香榧坚果储藏过程中油脂品质的影响  

Effect of nanocomposite film on oil quality of Torreya grandis‘Merrillii’nuts during storage

作　　者：胡渊渊[1,2] 鲍俊俊 蔡晓郡 周小妹 杨大鹏 宋丽丽 HU Yuanyuan;BAO Junjun;CAI Xiaojun;ZHOU Xiaomei;YANG Dapeng;SONG Lili(College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;State Key Laboratory of Subtropical Silviculture,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Forestry Station of Agricultural Technology Extension Center in Hangzhou Fuyang District,Hangzhou 311400,Zhejiang,China;College of Chemical Engineering and Materials Science,Quanzhou Normal University,Quanzhou 362000,Fujian,China)

机构地区：[1]浙江农林大学林业与生物技术学院,浙江杭州311300 [2]浙江农林大学省部共建亚热带森林培育国家重点实验室,浙江杭州311300 [3]富阳区农业技术推广中心,浙江杭州311400 [4]泉州师范学院化工与材料学院,福建泉州362000

出　　处：《浙江农林大学学报》2024年第3期447-456,共10页Journal of Zhejiang A&F University

基　　金：浙江省林业科技项目(2023B06);浙江省重点研发计划项目(2020C02019)。

摘　　要：【目的】研究新型纳米复合膜包装香榧Torreya grandis‘Merrillii’籽在储藏过程中油脂品质的变化规律,为开发香榧等其他坚果的新型包装材料提供理论依据。【方法】以提取精油后的香榧假种皮残渣和香榧精油为原料制备的纳米复合膜液为包装原材料,采用Schaal烘箱法加速香榧储藏期的氧化试验,设置2种包装形式[直接涂膜:对照(ck)和纳米复合膜液(Coating);成膜袋装:塑料袋包装(PE)和纳米复合膜袋包装(Film)],测定各处理下0~6周储藏过程中香榧籽失质量率、酸价、碘值、皂化值、脂氧合酶活性、过氧化值、羰基价、茴香胺和硫代巴比妥酸质量分数。【结果】①储藏4~6周,Coating处理的香榧籽的碘值显著高于ck(P<0.05),且Film处理的香榧籽的碘值显著高于PE处理(P<0.05)。②储藏5~6周,Coating处理的香榧籽的脂氧化酶活性、过氧化值、羰基价和硫代巴比妥酸质量分数均显著低于ck(P<0.05),且Film处理的香榧籽的以上指标均显著低于PE处理。③PCA分析显示:储藏1~6周,Coating与Film处理的香榧籽之间无明显的分离,但它们与PE、ck之间则存在明显的分离。【结论】新型制备的纳米复合膜液无论是直接涂层还是成膜包装,均可显著延缓储藏香榧籽的油脂酸败,使其保持较好的油脂品质。[Objective]This study aims to study the changes of oil quality in nano-film packaged Torreya grandis‘Merrillii’nuts during storage,and provide theoretical basis for searching new packaging material.[Method]The nanocomposite film solution prepared from pseudoseed residue after essential oil extraction and its essential oil were used as packaging raw materials.The oxidation experiment of the nuts during storage(0−6 weeks)was conducted by Schaal oven method.Two packaging types were set up(direct coating:control,short for ck;nanocomposite film solution coating,short for Coating;film bagged:plastic bag,short for PE;nanocomposite film bag,short for Film).[Result](1)During 4 to 6 week of storage time,the iodine value of the nuts with Coating was significantly higher than that of ck(P<0.05),but it of the nuts with Film was significantly lower than that of PE(P<0.05).(2)During 5 to 6 week of storage time,the lipid oxidase activity,peroxidation value,carbonyl value and thiolbarbituric acid content of the nuts with Coating were significantly higher than those of ck(P<0.05),and the above indicators of the nuts with Film were significantly lower than those of PE.(3)PCA analysis showed that there was no obvious separation between the nuts with Coating and Film,however,the two treatments clearly separated from PE and ck.[Conclusion]The newly prepared nanocomposite film solution,whether directly coating or film bagged can significantly delay the rancidity of the nuts,with better oil quality during storage.[Ch,6 fig.36 ref.].

关 键 词：香榧籽 碳点 纤维素纳米纤维 纳米精油乳液 油脂品质 

分 类 号：S759.8[农业科学—森林经理学]