迷迭香和绿茶提取物对25℃贮藏茄香酱汁品质的影响
Effect of rosemary and green tea extracts on qualities of tomato fragrant sauce at 25℃
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摘要: 研究在茄香酱汁中分别添加迷迭香提取物0.1 g/kg(RE0.1)和0.25 g/kg(RE0.25)、绿茶提取物0.05 g/kg(GT0.05)和0.1 g/kg(GT0.1),评价在25℃贮藏15 d过程中茄香酱汁品质变化规律。结果显示在25℃贮藏过程中,绿茶提取物未抑制茄香酱汁中微生物生长,GT0.05和GT0.1的货架期分别为5 d和8 d,而迷迭香提取物显著抑制微生物生长,RE0.1和RE0.25在15 d内菌落总数均未超标;同时,RE0.25在8 d对茄香酱汁原有风味没有影响,而RE0.1在15 d内对茄香酱汁的风味、p H和盐度均未产生显著影响。因此,添加迷迭香提取物0.1g/kg可以保持茄香酱汁品质,延长其货架期至15 d。Abstract: The rosemary and green tea extracts were added into the tomato fragrant sauce at level of 0.1 g/kg( RE0.1) and0.25 g/kg( RE0.25),and 0.05 g / kg( GT0.05) and 0.1 g/kg( GT0.1),respectively. The qualities of the tomato fragrant sauce were evaluated during the storage at 25 ℃ for 15 d. The green tea extract showed no inhibition on the growth of the microorganism.The shelf life of GT0.05 and GT0.1 were 5 d and 8 d.The rosemary extract inhibited growth of the microorganism with the shelf life of 15 d at least.Moreover,the RE0.25 showed no influence on the flavor of the tomato fragrant sauce in 8 d,while the RE0.1 hold the flavor,p H,and salt of the tomato fragrant sauce in 15 d. Hence,the rosemary extract of 0.1 g/kg maintained the qualities of the tomato fragrant sauce,and extended the shelf life to 15 d.