共查询到18条相似文献,搜索用时 338 毫秒
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描述金枪鱼鱼酥和深海旗鱼鱼酥的加工工艺特点。为考察鱼酥类产品的储藏稳定性,研究了金枪鱼鱼酥和深海旗鱼鱼酥在常温储存14个月期间的感官品质、微生物指标、水分含量、水分活度、酸价、过氧化值和DHA含量变化。结果显示,随着储存时间的延长,产品的感官品质、微生物指标、水分含量和水分活度无显著变化,DHA含量呈下降趋势,但是下降程度比较轻微,经过14个月的常温储存,其含量还保持在350 mg/100 g以上,酸价和过氧化值呈现上升趋势,但均低于国标规定限值,表明金枪鱼鱼酥和深海旗鱼鱼酥在常温储存14个月内品质稳定。 相似文献
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植酸是从米糠或小麦麸皮中提取的一种天然无毒食品抗氧化剂,它在油酥方便食品贮藏保质中的应用研究国内至今尚无报导。本文研究了“桃酥”在添加0.01~0.02%植酸量时的酸值、过氧化值和丙二醛含量以及随贮藏时间延长而降低或稳定的特性,有利于防止植物油的自动氧化和分解,提高食品的货架期。 相似文献
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通过借鉴橡胶、塑料等其它化工行业表面改性的方法。试用石蜡、硅油、硬脂酸、钛酸酯复合型偶联剂等做表面改性剂,对炼钢过程铁水预处理用脱磷剂石灰粉进行改性处理,对比测试改性效果,确定工艺路线和改性剂的选择,解决了太钢二炼钢厂铁水预处理过程中的石灰粉剂堵枪、粘结料罐壁的难题,达到了理想的效果。 相似文献
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储粮害虫对粮油食品生产全过程中所造成数量上的损失很大,据统计,全世界仅粮食在储藏期间,因虫害造成的损失高达5%,此外,还使其食品品质劣变。本文论述了粮食储藏过程中磷化铝熏蒸难杀死害虫分析其原因,并提出相应对策,为切实减少或避免储粮害虫造成的损失,提高储粮害虫防治水平,确保国家粮食安全有所裨益。 相似文献
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Motivated by the Saudi Arabian government's objective to diversify its economy away from oil and correct deficiencies associated with the Saudi stock market crash of 2006, a series of significant capital market infrastructure reforms were initiated that began with the 2007 reorganization of the Tadawul Stock Exchange (TSE) and the Capital Market Authority (CMA) as its sole regulator. This paper adds to the growing body of emerging market literature by providing new evidence of the effects of these initiatives on earnings quality for firms listed on the TSE. The results of tests of this study provide robust evidence that earnings quality increased during the 2007 to 2018 reform period. In particular, we document that relative to pre – reform years, reform period R squares, earnings response coefficients (ERCs) increased and discretionary accruals decreased. We rationalize these findings by asserting that improved regulatory oversight in juxtaposition with significant reform period investments into Saudi Arabia's capital markets infrastructure enhanced earnings quality (Jiambalvo et al., 2002; Latif et al., 2017; Zhong et al., 2017). 相似文献
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Daya Goburdhun Padmini Seebun Arvind Ruggoo 《International Journal of Consumer Studies》2000,24(4):223-233
The type of products may affect the quality of oil during deep‐fat frying. The quality changes in pure soybean oil during frying of potato chips and chicken drumsticks were evaluated and compared. The oil was subjected to continuous frying at 180°C for a period of 315 min. The parameters used to assess the oil quality were peroxide value (PV), iodine value (IV), free fatty acids (FFA), refractive index (RI) and colour. The percentage of oil absorbed by the two products was determined. The oil was also assessed visually for any change in colour, viscosity, turbidity, flavour and deposit. Results showed that, for both products, PV, IV, FFA, RI and colour changed significantly with time (P < 0.05). Potato absorbed oil during frying (6.9%), whereas chicken released fat into the frying medium (2.4%). When the rates of change of the various parameters in the oils were compared for the two products, significant differences (P < 0.05) were noted for PV and colour only. The oil used during the frying of chicken appeared visually to be at a more advanced stage of deterioration. 相似文献
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本文首先基于关志雄(2002)和Lall等(2006)提出的基于产品技术附加值分布的贸易结构分析法,在SITC三位数水平下考察了2001—2005年我国对东盟各国出口贸易结构及其变迁,研究结果显示:我国对东盟十国的出口贸易结构有恶化的趋势。因而,为分析影响这一结构变迁的主要因素,本文采用引力模型对可能影响这一贸易结构变迁的各种因素进行了显著性分析,结论显示:总体而言,东盟各国的经济规模对我国对其出口贸易结构变迁具有显著影响,在此基础上,基于变系数面板数据模型深入分析了东盟各国经济规模对我国对东盟各国出口贸易结构变迁的综合影响。最后,针对我国的对外经贸和宏观经济发展现状,提出了优化我国对东盟出口贸易结构的相应对策建议。 相似文献
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由于当前技术水平的局限,国内外大型油轮装货前卸货后的底油量始终无法较为准确的测定,从而直接影响了装货和卸货的船测数据准确性。近年来,在舟山口岸进行清洗舱作业的大型油轮逐渐增加,根据海关监管的需要,船方委托我公司对所有外籍油轮最终清洗出来的油污水、含油量、油泥等进行数重量鉴定。通过对这些数据进行收集分析,发现实际清洗出来的油品数量与在日常的鉴定工作中对油轮的底油进行计量所得的数量有一定的差别。本文通过对影响底油量的一些因素逐一进行数据分析,从中得到一些经验和规律,以供鉴定人员在日常的船舱计量工作中作为参考。 相似文献