Abstract
The shelf life of chestnut rose beverage is largely dependent on packaging method and storage temperature. In this study, we investigated the effects of packaging beverages in bottles made of either polyethylene terephthalate (PET) or PEN (polyethylene naphthalate)/PET and storage temperature (4, 25, 37, and 55 ℃) on the shelf life of chestnut rose beverage. The physicochemical parameters and enzyme activity of beverages were evaluated, and we found that at 4 °C, the vitamin C, superoxide dismutase, and total polyphenol contents of beverages stored in PEN/PET bottles increased by 9.95 ± 0.49%, 2.86 ± 0.13%, and 3.23 ± 0.09% respectively, compared to beverages in ordinary PET bottles. In addition, other characteristic indicators including total soluble solids, browning index, and color value were also significantly improved. A shelf-life model was established based on the Arrhenius equation, and it will help distributors and consumers to determine the storage time and optimal shelf life of chestnut rose beverage.
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