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辐照杀菌对鸡蛋蛋白液特性的影响 总被引：2，自引：0，他引：2
为了探明液态蛋蛋白液经辐照处理后有关特性的变化情况,为液态蛋的辐照杀菌技术应用提供试验依据。试验研究了不同辐照条件下鸡蛋蛋白液的pH值、色度、黏度、热变性、起泡性和乳化性的变化。试验表明,在辐照剂量0～3.0 kGy范围内随辐照剂量增大,蛋白液的pH值有所下降,但变化相对不大;蛋白液的黏度在辐照剂量0～0.4 kGy范围内随辐照剂量增大有较大下降,但剂量大于0.4 kGy 以后蛋白黏度随辐照剂量增大变化较小;蛋白液的色度随剂量增大无变化,但蛋液经加热凝固后,2.0 kGy以上剂量辐照组蛋白胶体颜色出现褐色,且随辐照剂量增大而加深;随辐照剂量增大,蛋白液起泡性能增强,但泡沫稳定性下降;随辐照剂量增大辐照后蛋白液的乳化性、乳化稳定性均下降。 相似文献
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介绍了南京辐照中心利用＾６０Ｃｏ γ射线辐照生产热缩套管的效益情况。对产品的生产工艺、辐照工艺、辐照成本及产品成本进行了分析，表明辐照生产热缩套管不仅带来较高的辐照利润，而且得到较高的产品利润。 相似文献
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辐照大蒜抑制发芽的部分加工工艺技术研究 总被引：6，自引：2，他引：4
本文对辐照大蒜抑制发芽的部分工艺进行了研究和分析。研究结果表明：１低温（ － ２ ±１ ℃） 贮藏能延长大蒜的适宜辐照期,冷藏至当年底出库辐照,仍然具有良好的抑芽效果;冷藏至翌年３ 月辐照,其抑芽效果有不同程度的降低;２在大蒜适宜辐照期内,辐照后冷藏与冷藏后再辐照的抑芽效果一致;但冷藏时间过长（ 至翌年３月） ,辐照的抑芽效果不如先辐照后冷藏的效果好;３辐照大蒜幼芽及芽鞘褐变的主要原因是贮藏温度过高引起的,而在低温条件下（ － ２ ±１ ℃） 贮藏不会产生褐变;辐照大蒜、辐照后冷藏大蒜和冷藏后辐照大蒜进入常温贮藏后,幼芽及芽鞘很快就会产生褐变。 相似文献
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本文研究~(60)Co—γ射线对多杀性巴氏杆菌的诱变作用,得到存活菌突变率、辐照菌突变率与辐照剂量、辐照强度、辐照时间、被辐照菌生长时期的关系。文中提出微生物辐射诱变育种工作中选择辐照剂量、被辐照菌生长时期的依据。 相似文献
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为探究电子束和γ射线辐照效应的差异性,分别采用2种辐照方式处理冷鲜猪肉,研究其对冷鲜猪肉氧化效应、营养品质、理化性质及感官风味的影响。结果表明,2种处理冷鲜猪肉的TBARS、羰基值和双烯值均显著高于对照组,且γ射线辐照处理高于电子束辐照;处理组的a*、a*/b*、蒸煮损失、剪切力均显著高于对照组,气味等感官品质显著优于对照组;处理组和对照组的脂肪、蛋白质和灰分含量无显著差异。综上所述,辐照处理提高了冷鲜猪肉的氧化,但电子束辐照引起的脂肪氧化效应小于等剂量γ射线辐照引起的氧化效应;电子束辐照冷鲜肉后,其理化性质、营养品质和感官风味均优于等剂量γ射线辐照,因此电子束辐照对冷鲜猪肉的保鲜效果更好。研究结果为电子束辐照技术在冷鲜猪肉保鲜中的应用提供了理论指导。 相似文献
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丹东地区泥石流活动发展趋势及成因分析 总被引：1，自引：0，他引：1
丹东地区的泥石流，主要分布在宽甸、凤城、岫岩三县，泥石流活动影响面积占全区．总面积的５８．３％。区内泥石流首先在宽甸县东部鸭绿江沿岸局部地区发生，然后向西延伸，向南北扩展。新中国建立以来，泥石流活动具有逐年加剧之势。泥石流的加剧，主要是破坏森林资源、不合理堆放废弃土石、过度放牧等人为因素造成的。 相似文献
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Kenji Ono Akane Komoriya Ryuichi Tachibana Akihiro Imaya Satoru Suzuki Hironori Noguchi 《Soil Science and Plant Nutrition》2018,64(2):168-180
ABSTRACT To successfully afforest coastal forest belts ensuring high disaster prevention, growth bases for them have been constructed by piling up soil in the low wetlands along the Kujukuri coastline. Ground surfaces in such bases are often covered with water because of soil compaction, leaving them susceptible to stagnant water. Water stagnation in soil is problematic, potentially interfering with afforesting coastal forests. Therefore, row deep tillage was conducted for parts of growth bases to combat the poor physical properties of the existing soil. Here, we surveyed soil profiles and measured vertical soil hardness distribution in two forest stands with piling up soil to evaluate the effectiveness of tillage for man-made soil. Soil hardness measurements indicated that the vertical areas with ‘soft’ and ‘hard/consolidated’ soil alternately appeared in growth base profiles. Generally, soil of the dense and very hard layers was apt to be formed by strong compaction of the filled-up soil because of heavy machinery usage during growth base preparation. Such dense and hard soils in the untilled areas of the profiles were also observed in this study. By contrast, it was confirmed that row deep tillage drastically improved soil physical properties, i.e., decreased hardness and increased water permeability, because the sequential hardened subsoil layers were well-broken-up. Moreover, it was observed many thick and large roots penetrated deeper layers with deep tillage areas. These results suggest that row deep tillage of hardened soil is quite effective at securing the areas and providing the physical conditions for deeply penetrated roots into deeper soils, which increases healthy root development. They show the effects of soil hardness reduction and water permeability improvement have been maintained for two decades, at least, after construction. These findings will be useful for alleviating some problems of soil compaction, water stagnation, and tree-growth hindrance that have been encountered on afforestation sites with man-made soil. 相似文献
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Abstract An attempt was made to estimate the degree of maturity of city refuse composts by measuring their cation-exchange capacity (CEC). The CEC of the city refuse compost increased for the first 7 days after commencement of the fermentation process, decreased for the next 2 days, and then increased again gradually up to the end of the piling period. A highly significant negative correlation was noted between the CEC and C/N ratio of the city refuse composts (r=-0.903***). Regression analysis yielded the relationship: In CEC=7.02-1.02 In C/N The CEC values of the city refuse composts, which were considered to have been sufficiently matured for application, were greater than about 60 me/ 100 g of ash-free material. 相似文献
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控制辐照食品安全的HACCP质量管理体系 总被引：8，自引：3，他引：5
介绍了食品危害分析与关键控制点体系 (HACCP) ,对脱水蔬菜辐照灭菌过程中的各个环节可能造成的潜在危害进行了分析 ,并探讨了在中国辐照食品加工企业中建立HACCP的方法 相似文献