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投稿时间:2016-11-20
投稿时间:2016-11-20
中文摘要: 以“西州蜜 25 号”哈密瓜为原料,在常温下浸泡于 10、15、20 mmol/ L(添加 0.5 ml/L 吐温-20)3 个浓度的草酸 溶液中 10 min,以常温蒸馏水浸泡(添加 0.5 ml/L 吐温-20)10 min 为对照,待其表面水分完全晾干后,置于 3 ℃ ~ 5 ℃的 冷库中进行贮藏 42 d。观察和测定贮藏期间哈密瓜果实冷害指数及品质指标等。试验结果表明,与对照相比,草酸处 理抑制整个贮期果实硬度和维生素 C 含量的下降,提高贮藏前期(0~21 d)哈密瓜果实可溶性固形物含量(P < 0.05), 其中 15 mmol/ L 的草酸处理效果较显著。15 mmol/ L 草酸处理降低呼吸速率和细胞膜渗透率及冷害指数(P < 0.05), 20 mmol/ L 草酸处理提高果实的冷害指数和细胞膜透性,但减缓叶绿素含量下降速度。结果表明,15 mmol/ L 草酸是 降低哈密瓜冷害,延长果实低温冷藏品质较为有效的处理方法。
Abstract:Hami melon“Xizhoumi 25” was used in this experiment. Melons were dipped in different concentra- tions of oxalic acid (OA ) with 10, 15 mmol/ L and 20 mmol/ L (add 0.5 mL/L tuwen-20)and melons were dipped in normal temperature distilled water was control at 25 ℃ for 10 min, after the surface were dried com- pletely and stored at 3 ℃-5 ℃ for 42 days, chilling injury index and quality in fruits were measured during the storage period. Compared with that in control, OA treatment inhibited the decrease of firmness and ascorbic acid (ASA) contents and increased the contents of total soluble solids from the initial storage to 21 day (P < 0.05) , in this respect, 15 mmol/L OA was the most effective treatment. In addition treatment with 15 mmol/L OA inhib- ited the increase of respiration rate and electrolyte leakage, reducing the chilling injury index of Hami melon. But 20 mmol/L OA promoted the chilling injury index and electrolyte leakage, meanwhile which restrained the decline of chlorophyll content compared to the controls. The results indicated 15 mmol/L OA was the most effec- tive treatment to reduce the CI(chilling injury index)and extend the storage quality.
keywords: Hami melon fruit oxalic acid chilling injury quality
文章编号:201716037 中图分类号: 文献标志码:A
基金项目:“十二五”国家科技支撑计划项目(2011BAD27B01)
作者 | 单位 |
王静1,2,茅林春2,李学文1,张辉1,易磊闯1,李祖梁1,冯延晓1,臧志娟1 | 1.新疆农业大学 食品科学与药学学院,新疆 乌鲁木齐 830000;2.浙江大学 生物系统工程与食品科学学院,浙江省农产品加工技术研究重点实验室,浙江 杭州 310058 |
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