基于质构仪质地多面分析法对香菇质地评价

香菇Lentinula edodes质地是影响其食味品质和货架期的一系列重要品质指标.本研究首次基于质构仪质地多面分析法(TPA),结合传统感官评级对ZX6(浙香6号)和Lsm9两个香菇亲本及其2个杂交菌株(L1*11和L4*6)子实体的不同部位(菌柄P1、菌盖顶部P2、菌盖中心P3和菌盖侧边P4)的7个质地指标和2个...

Evaluation on fruiting body texture of Lentinula edodes based on texture profile analysis

The texture is a series of indices determining the taste quality and shelf life of Lentinula edodes. The texture at four different fruiting-body postions, stipe (P1), cap center (P2), cap top (P3), and tissue around the cap (P4) of four Lentinula edodes cultivated strains including two parents ZX6 and Lsm9 and their hybrids (F₁, L4*6 and L1*11) was evaluated by using texture profile analysis (TPA) and traditional sensory compactness rating for the first time. Correlation analysis showed there were significant correlations between the sensory compactness rating and six TPA texture indices, indicating that the TPA indices can be used as the quantitative parameters instead of traditional compactness rating system. Correlation analysis between different sampling positions showed that P2 had the largest correlation scope with other three cap parts among the seven texture indices, being consistent with the result of principal component analysis (PCA). Besides, the significant positive correlations were observed among hardness 1, adhesion, hardness 2, elasticity, stickiness and chewiness. So far as variety and heredity are concerned, except the lower cohesiveness, ZX6 has higher level of texture indices than Lsm9. Hardness 1, hardness 2, springness, stickiness and chewiness of the F₁ hybrid L4*6 showed no obvious differences from those of Lsm9, while hardness1, hardness2 and gumminess of L1*11 were obviously lower than those of parent Lsm9, indicating the tremendous transgressive segregation of L1*11 was observed. Fruit-body texture in Lentinula edodes F₂ segregation population needs further investigation.