热处理对食荚豌豆贮藏品质的影响

    Effect of heat treatment on postharvest quality of edible podded pea

    • 摘要: 为探索热处理对食荚豌豆保鲜的效果,实验研究了40℃ 20 min、40℃ 40 min和50℃ 20 min热水处理对食荚豌豆在1℃贮藏期间主要生理和品质变化的影响。结果表明,采用40℃ 20 min和40 min热水处理不仅可有效降低食荚豌豆腐烂的发生,同时还可显著抑制豆荚的呼吸强度和多酚氧化酶(PPO)、过氧化物酶(POD)及苯丙氨酸解氨酶(PAL)活性,抑制豆荚丙二醛(MDA)和木质素含量的上升及叶绿素和维生素C含量的下降,从而起到延缓豆荚衰老和品质下降的作用,因而在食荚豌豆保鲜中具较好应用前景。50℃ 20 min热水处理对延缓食荚豌豆衰老和保持品质无明显作用。

       

      Abstract: To explore the effectiveness of pre-storage heat treatment on quality maintenance of edible podded pea (Pisum. sativum L. Var. Saccharatum), fresh harvested edible podded pea were dipped in water at either 40℃ for 20 min, 40 min or 50℃ for 20 min before stored at 1℃ for 6 weeks. The main physiological and quality parameters were monitored during storage at the intervals of one week. The results indicated that treatments at 40℃ for 20 min or 40 min not only reduced decay incidence, but also inhibited respiratory rate and the activities of polyphenol oxidase, peroxidase and phenylalanine ammonia-lyase, maintained lower level of malondialdehyde and lignin contents and higher level of chlorophyll and Vitamin C contents, thereby delaying the senescence process and quality degradation. Therefore, these treatments have potential use in edible podded pea storage. Treatment at 50℃ for 20 min, however, had no beneficial effects on delaying senescence and maintaining quality in edible podded pea.

       

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