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水稻种子贮藏谷蛋白α-2亚基减少突变体 被引量:15
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作者 曲乐庆 魏晓丽 +2 位作者 佐藤光 小川雅广 熊丸敏博 《Acta Botanica Sinica》 CSCD 2001年第11期1167-1171,共5页
通过筛选水稻 (OryzasativaL .)受精卵的甲基亚硝基脲 (MNU)处理后代 ,获得 9个谷蛋白α_2亚基减少 (α_2L)突变体。这些突变体依据其SDS_PAGE图谱又可分成 3种类型 :α_1显著增加型 (α_1H/α_2L)、β_2减少型 (β_2L/α_2L)和α_3显... 通过筛选水稻 (OryzasativaL .)受精卵的甲基亚硝基脲 (MNU)处理后代 ,获得 9个谷蛋白α_2亚基减少 (α_2L)突变体。这些突变体依据其SDS_PAGE图谱又可分成 3种类型 :α_1显著增加型 (α_1H/α_2L)、β_2减少型 (β_2L/α_2L)和α_3显著增加型 (α_3H/α_2L)。双向电泳分析揭示了产生突变体α_2L的原因在于缺少了一条pI6 .71/α_2的多肽 ;α_1H和α_3H的原因在于分别形成了一条新的多肽pI6 .5 0 /α_1和pI6 .90 /α_3;而产生 β_2L的原因在于缺少一条pI8.74/ β_2的多肽。pI6 .71/α_2和pI8.74/ β_2多肽同时缺失于同一突变体暗示二者可能来源于同一前体 ,为同一基因的产物。这些突变体为水稻谷蛋白遗传规律、生物合成遗传调控机制、基因功能以及蛋白组学研究不可多得的素材。 展开更多
关键词 谷蛋白 突变体 双向电泳 水稻种子 贮藏成分 α-2亚基缺少
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Effect of Modified Atmosphere Packaging on Postharvest Quality of Barangan Banana
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作者 Elisa Julianti Ridwansyah Era Yusraini 《Journal of Food Science and Engineering》 2012年第1期38-43,共6页
An experiment retail film packaging system was used to compare the atmospheric composition within sealed packs containing barangan banana fruits. This research was done in order to study the effect of packaging films ... An experiment retail film packaging system was used to compare the atmospheric composition within sealed packs containing barangan banana fruits. This research was done in order to study the effect of packaging films with different permeability properties on the physicochemicalproperties of barangan banana during storage at room temperature (28 ± 2 °C) and at 15 °C. The films used were 0.09 mm low density polyethylene (LDPE), 0.04 mm polypropylene and 0.057 mm LDPE compared with unwrapped fruits as control. Barangan bananas were evaluated each 5 days intervals for changes in moisture content, total sugars, vitamin C, hardness and color. Unwrapped barangan bananas were overripe and soft after 15 days at both temperature conditions. Sealed packages especially using LDPE at 15 °C delayed the development of the yellow color of banana until 20 days of storage and had the lowest weight loss. 展开更多
关键词 Modified atmosphere packaging barangan banana film plastic postharvest.
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