白酒酿造的绿色化与智能化研究现状及展望

信息化技术的应用促进了我国工业的高速发展,智能制造、绿色制造等领域成为工业、企业的重要发展方向。当前,白酒酿造的绿色酿造与智能化如雨后春竹,得到蓬勃发展。越来越多的白酒企业纷纷开始对白酒酿造的绿色化与智能化进行探索及尝试,有些企业已经形成适用于本企业的绿色化与智能化酿造生产模式。结合金种子酒业的项目研究及其生产实践,从概念、应用领域、发展现状、发展趋势等方面,概述了现阶段白酒行业在酿造绿色化与智能化等方面的应用及发展现状,指出绿色化与智能化是中国白酒产业稳步发展的必经之路,以期为白酒酿造的绿色化与智能化提供参考。     

基于微信平台的混合式教学模式研究与实践

随着互联网技术的不断发展,微信已经成为人们生活、学习和工作的一部分。通过充分利用微信平台的优势,采用混合式的教学方法将传统的线下教学与网络线上教学结合起来,构建基于微信平台的混合式教学模式,能加强师生间的交流,提高学生学习的积极性,提升学习效果。     

不锈钢粉尘综合利用现状及研究进展

介绍了国内外不锈钢粉尘的处理工艺,对等离子工艺、Inmetco工艺、Fastmet/Fastmelt工艺、STAR工艺等几种代表性工艺的优缺点做了对比,并重点阐述了一步还原直接回收工艺,对该工艺所面临的问题展开了讨论。     

Spatial distribution of chromium in soils contaminated by chromium-containing slag

To evaluate the metal chromium (Cr) contamination of soil at a chromium-containing slag site by ferrochromium production, the contaminated sites, under slag heap, in the vicinity of slag heap and arable soils near the outlet of sewer channel, and unpolluted site 5 km away from one ferroalloy plant in Hunan Province, China, were selected. The concentrations of total Cr and water soluble Cr in bulk soil samples and profile depth samples were determined. The results show that the soils in the vicinity of slag heap have the highest total Cr content followed by the soils under the slag heap and near the outlet of sewer channel of the factory. The mean concentrations of total Cr in the top soils at above three contaminated locations exceed the critical level of Secondary Environmental Quality Standard for Soil in China by 3.5, 5.4 and 1.8 times. In most Cr polluted soils, total Cr has a relative accumulation in soil depth of 40-60 cm, but this trend is not found in unpolluted soils. The average concentrations of water soluble Cr (Ⅵ) in top soils under slag heap and in the vicinity of slag heap are 176.9 times and 52.7 times higher than that in the uncontaminated soils, respectively. However, water soluble Cr (Ⅵ) contents in soils near sewer channel are all low and the values are close to that in the uncontaminated soils. Although water soluble Cr (Ⅵ) content in soil profiles decreases with soil depths, it in soils under slag heap maintains a high level even at a depth of 100-150 cm. The results imply that the transportation of Cr (Ⅵ) can result in a potential risk of groundwater system in this area.     

金种子浓香型强化大曲制备工艺分析与探讨

大曲作为大曲酒生产的糖化发酵剂,对曲酒的质量和出酒率都有极大的影响;其中,由于制曲原料、培曲工艺、地域环境等的不同,导致成品曲的理化指标差异明显。为进一步提高金种子浓香型强化大曲的品质,使其糖化力、酯化力、感官等指标均衡协调,探究不同培养温度制备的成品曲品质差异等。本文分析与探讨了金种子浓香型强化大曲的制备工艺,以小麦、大麦、豌豆等为制曲原料,经机械破碎后添加原料总质量1.0%的酯化红曲和2.0%的丢糟等,加水拌和均匀后机械压制曲坯,入房培曲并进行不同培养温度试验。结果表明,以培曲温度49~53℃制备的成品曲,其糖化力、酯化力等指标明显优于培曲温度在53~61℃制备的成品曲,曲皮的糖化力及酯化力均高于曲心;感官品评表明,培曲温度在49~53℃之间制备的成品大曲,其一级曲的比例明显增高。     

安琪生香活性干酵母在固态小曲清香型白酒酿造生产中的应用

生香酵母在白酒发酵过程中具有同步产酒生香的特点,在保持出酒率的同时生成较高含量的酯类物质,活性干酵母技术能较长时间保持酵母菌的活力和性能。为提高固态小曲清香型白酒的品质,对安琪生香活性干酵母在固态小曲清香型白酒酿造生产中的应用进行了研究,跟踪检测固态发酵过程酒醅中乙酸乙酯、乳酸乙酯等风味物质的含量变化,并对原酒中主要风味物质含量等指标进行对比分析。结果表明,在固态小曲清香型白酒原酿造生产工艺的基础上添加0.05%的安琪生香活性干酵母,并在活化后使用,与对照组相比,酒醅中乙酸乙酯、乳酸乙酯等风味物质的含量变化对比明显,比原酒中乙酸乙酯含量提高12.50%,总酯含量提高18.50%,杂醇油含量下降8.16%,乙乳比由1.67提高到2.38,酯醇比由0.34提高到0.61,使得原酒香味更加协调,清香纯正、突出,从而提高了原酒品质。     

ICP-AES法测定及分析窖泥中重金属元素

以窖泥为对象,采用电感耦合等离子体发射光谱法快速测定了重金属元素Cd、Pb、Cr、Cu、Zn含量,结果表明：窖泥中Cd、Pb、Cr、Cu、Zn元素含量平均值分别为0.000 7 μg/g、0.011 3 μg/g、0.098 3 μg/g、0.038 5 μg/g、0.910 7 μg/g,其中Pb迁移变化活跃,变异系数达131.85%。窖泥Cd、Pb、Cr、Cu、Zn的单项污染指数值显著低于国标限量水平,各窖池综合污染指数值同样显著低于国标安全评价标准值,表明企业窖泥清洁安全无重金属污染风险。