Add time:08/13/2019         Source:sciencedirect.com

The purpose of this study was to evaluate volatile compounds and sensory acceptance of HHP processed orange juice compared with non-processed and pasteurized orange juices. RSM and sniffing were successfully applied for optimization of HS-SPME conditions. The chosen HS-SPME conditions 37 °C during 25 min of exposure properly characterized the volatile profile of HHP processed, pasteurized and non-processed orange juices. HHP processing conditions had an impact on the volatile profile of the juice. Sensory acceptance was higher for non-processed and similar for HHP and pasteurized orange juice. PCA discriminated processed from non-processed orange juice, and HHP from pasteurized orange juice. HHP processed orange juice was characterized by ethyl butanoate, octanal, 1-octanol, linalool, ethyl 3-hydroxyhexanoate, nootkatone and ethyl octanoate. Pasteurized orange juice was characterized by the same compounds as HHP, plus geranyl acetate and apart from ethyl octanoate. Terpinolene, octyl acetate, carveol, carvone, linalyl acetate and δ-elemene characterized non-processed orange juice.

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