[目的]果实感官品质是决定果品市场竞争力最重要的因素,建立科学的柑橘果实综合感官品质评价方法,明确不同产地柑橘果实感官品质差异,探究消费者偏好性,筛选与柑橘感官属性密切相关的代谢产物,为柑橘育种、实际生产及市场销售提供理论支撑和数字化方法.[方法]以具有品质差异的 9 个产区沃柑果实为试验材料,首先组织评价员对样品各感官属性及权重进行评价,利用模糊数学得出不同感官属性的权重排名,并对不同产地样品的综合感官品质进行排序及分组;同时,检测常规理化指标,并通过气相色谱质谱联用仪(gas chromatography-mass spectrometry,GC-MS)和高效液相色谱(high performance liquid chromatography,HPLC)分析与果实风味相关的可溶性糖、有机酸、氨基酸、类黄酮等代谢产物;进而利用 OPLS-DA 分析不同组间样品的主要差异代谢物,并通过皮尔逊相关性分析将样品各感官属性与相关代谢物质数据进行关联;最终获得可反映沃柑风味品质的重要代谢标志物.[结果]沃柑感官属性权重排名为果肉甜度＞果肉酸度＞果肉化渣性＞果实色泽＞果实香气＞果实外形;常规指标固酸比不适合用于沃柑果实样品内在品质优劣的精准分级.因此,基于综合感官品质差异,9 个产地沃柑样品被划分为两组,高感官品质组沃柑样品综合得分均高于 60 分,低感官品质组综合得分均低于 60 分.OPLS-DA分析表明,3 种主要差异代谢产物可在风味上显著区分高、低感官品质组沃柑样品,这些物质分别为L-谷氨酸、橙皮苷和L-缬氨酸.皮尔逊相关性分析表明,α-酮戊二酸、L-谷氨酸和橙皮苷含量与沃柑综合感官品质、甜度和酸度得分多呈显著负相关.[结论]模糊数学可用于沃柑果实综合品质评价,消费者对沃柑的果肉甜度和酸度更为关注,L-谷氨酸和橙皮苷对沃柑果实品质差异的形成具有重要作用.
[Objective]Fruit sensory quality is the most important factor in determining the competitive edge in the fruit market.The aim of this study was to establish a comprehensive sensory quality evaluation method for citrus fruits by analyzing Orah mandarin(Citrus reticulata Orah)fruits produced in nine different regions and showing quality differences.In addition,this study was aimed to identify sensory quality differences,consumer preference,and metabolites closely linked to citrus sensory attributes in Orah mandarin from different regions.This study could provide the theoretical support and digital method for citrus breeding,practical production and marketing.[Method]Firstly,evaluators assessed each sensory attribute and weight of fruit samples,and the fuzzy mathematics was used to derive the weight ranking of different sensory attributes.The samples were then ranked and grouped based on comprehensive sensory evaluation.Furthermore,the physical and chemical indexes were measured,and metabolites related to fruit flavor were analyzed by using GC-MS and HPLC,including soluble sugars,organic acids,amino acids,and flavonoids.OPLS-DA was used to analyze the main differential metabolites between samples from different groups.The relationship between sensory attributes and metabolites was determined by using Pearson correlation analysis.Finally,the important biomarkers reflecting the flavor quality of Orah mandarin were identifued.[Result]The sensory attribute weights of Orah mandarin were determined as pulp sweetness＞pulp acidity＞pulp mastication＞fruit color＞fruit aroma＞fruit shape.Conventional solid-acid ratio was not suitable for accurate classification of the intrinsic quality of Orah mandarin samples.Therefore,based on comprehensive sensory quality,the nine Orah mandarin samples were divided into a high sensory quality group with a score larger than 60 and a low sensory quality group with a score smaller than 60.The OPLS-DA analysis revealed three key compounds(L-glutamic acid,hesperidin,and L-valine)distinguishing high and low sensory quality groups.Futhermore,the pearson correlation analysis indicated that the levels of α-ketoglutaric acid,L-glutamic acid and hesperidin were negatively correlated with sensory quality,sweetness and acidity.[Conclusion]Fuzzy mathematics was effectively used to evaluate the comprehensive quality of Orah mandarin.The results indicated that consumers were more concerned in pulp sweetness and acidity;L-glutamic acid and hesperidin might be trait components reflecting the flavor quality of Orah mandarin.
吴雅诺;陈嘉景;刘园;孔佳涛;胡哲辉;陈明华;吴俊琛;张红艳;蒋友武;徐娟
华中农业大学果蔬园艺作物种质创新与利用全国重点实验室/华中农业大学园艺产品感官评价与品质检测中心,武汉 430070
沃柑(Citrus reticulata Orah);感官品质;代谢产物;感官评价;模糊逻辑模型
C.reticulata Orah;sensory quality;metabolites;sensory evaluation;fuzzy logic model
《中国农业科学》 2024 (010)
2010-2022 / 13
国家重点研发计划(2021YFD1600102)、湖北省重点研发计划(2021BBA237)
10.3864/j.issn.0578-1752.2024.10.012
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