非食用组织对河套蜜瓜漫透射光谱和糖度及硬度检测影响的研究

Sugar content and hardness are important index of the quality of hetao muskmelon. The research on the influence of non-edible tissue (peel and cavity tissue) on diffuse transmittance spectra and sugar content and hardness of hetao muskmelon has rarely been reported at present. A transmission spectra detecting system was used for related study in this paper, the mathematical models of diffuse transmittance spectra of complete and non-edible tissue melons and sugar content, hardness were established with partial least square (PLS), the influence about non-edible tissue to the models set up was analyzed . The results of models on complete melon spectra and sugar content and hardness were with correlation coefficient (r) 0.87 and 0.85, root mean square errors of calibration (RMSEC) 0.73oBrix and 0.69oBrix and root mean square errors of prediction (RMSEP) 1.42oBrix and 1.09oBrix. The results of models on melon spectra of without non-edible tissue and sugar content and hardness were with correlation coefficient (r) 0.83 and 0.83, root mean square errors of calibration (RMSEC) 0.77oBrix and0.75oBrix and root mean square errors of prediction (RMSEP) 1.61oBrix and 1.07oBrix.