全面提高腌泡菜质量的研究

以甘蓝、萝卜、莴苣、雪里蕻为原料 ,研究其在不同温度、含盐量条件下腌泡过程中的总酸含量、亚硝酸盐含量的动态变化。结果表明 :1绿色蔬菜用 2 0 0 mg/kg Cu SO4与 3 0 0 mg/kg Zn Cl2 复合护绿及 50 0 mg/kg Ca Cl2 保脆后 ,可明显改善泡菜的外观和口感 ;2低盐泡制、添加 1 .0 %～ 1 .5%的大蒜泥可有效抑制泡菜亚硝酸盐的产生     

生态农业示范区中一种改进型高效沼气发酵装置的设计与应用

根据生态农业示范区的实际情况，力求创造沼气发酵微生物生存、繁殖的最佳环境条件，同时把各种通过实践证明行之有效的提高产气率的措施尽可能有机地结合起来，改进设计、修建了一种具有效率高、管理方便、造价低的沼气发酵装置．经连续２ａ跟踪测试，其产气率均在０．３ｍ３ｄ－１以上，应用取得了很好的能源、经济和生态效益．     

平菇液体菌种的制备及其栽培效果观察

平菇是我国食用苗生产上大量栽培的品种之一.为了探讨平菇菌种的工业化生产新途经笔者进行了平菇液体菌种的制备及其栽培试验研究,取得了较好效果.     

Biological Aerated Filter for Algae Pulp Filtrate Treatment and the Analysis of Microbial Species

When the salvaged cyanobacteria was dehydrated by centrifugation, the algae pulp filtrate produced. And there were a large number of algae cell sap, nitrogen, phosphorus, and algae toxin. If it is discharged into water directly, it would cause secondary pollution. The downward-flow biological aerated filter was used to treat the algae pulp filtrate, and the removal effect of COD, NH3-N, TN, TP and MC-LR was investigated. The result showed that the average removal rate of COD, NH3-N, TN, TP and MC-LR were 73.4%, 91.6%, 39.6%, 13.2% and 88.3% respectively under the condition that the hydraulic loading was for 0.40 m 3/(m 2·h). The COD and NH3-N meet standard A of the first class in “Discharge standard of pollutants for municipal wastewater treatment plant”(GB18918-2002), and the concentration of MC-LR is lower than the limit of “Standards for Drinking Water Quality”(GB 5749-2006). The microbial species in biological aerated filter was analyzed. The dominant bacteria were Lysinibacillus, aeromonas, bacillus, acinetobacter, achromobacter, bacillus, fusiformis, and pseudomonas respectively determined by constructing phylogenetic tree. The cyanobacteria toxin degradation bacterium of T1 which was put in biological aerated filter in start-up grew well and form certain advantages.     

糙米酵素提取物对高血脂大鼠脏器及消化酶影响的研究

研究糙米酵素提取物对高血脂大鼠脏体比、肝脏脂肪及消化酶的作用。动物实验结果表明,糙米酵素提取物使灌喂6周的大鼠体质量显著低于高脂对照组(HCK)(p<0.05),至8周时,则效果非常显著(p<0.01);与HCK相比,脾腺指数显著增加(p<0.01),说明糙米酵素提取物具有增强机体免疫功能的作用;大鼠各灌胃剂量组肝脏粗脂肪质量非常显著低于HCK(p<0.01),它们对肝脏粗脂肪含量的抑制率分别达32.26%,46.61%和33.81%,说明糙米酵素提取物对食源性脂肪肝有较好的预防作用,其中以高剂量组的作用效果最佳;各组大鼠十二指肠中累积的淀粉酶活性非常显著高于HCK组(p<0.01),淀粉酶含量的增加率分别达4.75%,5.56%和7.11%,而与HCK组相比,胃液蛋白酶差别不显著(p>0.05)。糙米酵素有助于降低血脂,提高体内消化酶含量。     

产芳香物质益生菌筛选及其对谷物食品发酵效果的研究

从大列巴、馒头、发面饼、麻花、白酒酒曲、米酒中筛选的66种菌及实验室保存的12种菌种中筛选出3种产芳香物质益生菌种,分别加到面粉中用于发酵馒头、玉米粉发酵发糕及制造饮料、糯米粉中,用于发酵粘豆包及发酵饮料,以期进一步增加发酵产品风味,最终得到产品品质更优良的谷物发酵食品。结果表明,酿酒酵母适合发酵面食和发酵酒精性饮料,保加利亚乳杆菌适合面食增香和发酵谷物酸性饮料,嗜酸乳杆菌适合发酵谷物酸性饮料。     

硫酸亚铁对铬渣滤液中六价铬的处理研究

铬渣废水中由于Cr6+浓度高,对环境以及人的健康存在潜在危害,因此有必要进行研究处理。笔者通过单因子试验研究硫酸亚铁投药量、pH、搅拌速度、搅拌时间和反应时间5种参数对含铬废水处理的影响。研究结果表明,5种影响因素中对含铬废水处理效果最明显的是投药量,试验条件下的各单因子的最佳条件分别为：投药比为80;pH为7~8;反应时间为20 min;搅拌速度为快速搅拌;搅拌时间为10 min。     

用菠萝皮、渣酿制白兰地的初步研究

研究以生产菠萝罐头的下脚料——菠萝皮和渣为原料生产白兰地酒的新工艺，发酵工艺条件对产品质量的影响的试验结果表明：在菠萝皮、渣自然酸度条件下可正常发酵；糖浓度１５％酒精产量最高；液态发酵酒精产量最高，固态发酵酒精产量低，但甲醇含量低，质量好；发酵剂以纯种酵母Ａｓ２，３４６的产酒量高，甲醇含量低，质量最好。上述工艺生产的白兰地成分接近果肉生产的白兰地，但陈酒香味和橡木香味不明显     

黄瓜疫病菌毒素的产生和生物测定初报

黄瓜疫病菌菌系Ｐｍ７在铵氮培养液、黄瓜籽培养基、修改的Ｃｓ培养液和Ｐｌｉｃｈ＆Ｒｕｄｎｉｋｉ培养液中均能良好生长,其中以铵氮培养液和黄瓜籽培养基产毒能力较强。该菌系在适于生长的４种培养基中生长２０天所产生的培养滤液对１０个黄瓜种质有程度不同的毒性,该菌系培养滤液对辣椒、南瓜、茄子、番茄等蔬菜幼苗也有明显毒性     

Phytotoxic effect of culture filtrate from Fusarium subglutinans the causal agent of fusariose of pineapple (Ananas comosus (L.) Merr

Two pineapple varieties differing in resistance to fusariose were examined for the phytotoxic effect of Fusarium subglutinans culture filtrate. The cultivars were Perolera (more resistant to pathovars of Fusarium subglutinans) and Smooth Cayenne (more susceptible). The phytotoxic effect of culture filtrate was assessed in tissue culture pineapple plantlets (by electrolyte leakage and placing the culture filtrate on wound leaf segments) and callus (inhibition of growth). Smooth Cayenne proved to be the most sensitive cultivar in each test, whereas Perolera showed resistance to the culture filtrate and its callus grew in the presence of high concentrations of culture filtrate that were completely toxic to Smooth Cayenne. These results show that plants can display cellular resistance to the culture filtrate. This revised version was published online in August 2006 with corrections to the Cover Date.