白腐菌对染料脱色及降解的影响因素

在利用采集、分离、纯化获得的3株白腐菌对6种不同染料脱色、降解研究的基础上，进一步研究了培养基成分(氮源、藜芦醇添加量、锰离子浓度等)、缓冲液成分、溶解氧浓度、振荡条件和载体固定状态等因素对白腐菌用于染料及废水脱色的影响。     

白腐菌对稻草秸秆中木质纤维素降解规律的研究

通过对傅里叶变换红外光谱(FTIR)谱图的分析和木质纤维素组分含量变化的测定,研究了3株白腐菌在50天培养期内降解稻草中木质纤维素的规律。结果表明,3株白腐菌对稻草秸秆中木质纤维素的降解具有一定的顺序和选择性,先降解半纤维素和木质素,再同时降解半纤维素、纤维素和木质素。从降解比例来看,白腐菌对半纤维素和木质素具有很好的降解优势,对半纤维素有较好的降解选择性。     

化学机械法制浆废液中污染物质的白腐茵降解——第2部分 无外加营养盐条件下污染物质的白腐菌生化降解

进行了白腐菌处理化学机械法制浆废液的工艺实验研究,包括利用白腐菌降解酶的作用去除污染物质与脱色的可行性、生化处理过程影响因素的分析。研究结果表明白腐菌具有降解废液中污染物质的能力。在无外加营养盐的条件下,白腐菌可以直接利用废液中存在的碳水化合物降解产物作为碳源生长,进而开始降解其它污染物质的生化过程。     

化学机械法制浆废液中污染物质的白腐菌降解 第2部分 无外加营养盐条件下污染物质的白腐菌生化降解

进行了白腐菌处理化学机械法制浆废液的工艺实验研究 ,包括利用白腐菌降解酶的作用去除污染物质与脱色的可行性、生化处理过程影响因素的分析。研究结果表明白腐菌具有降解废液中污染物质的能力。在无外加营养盐的条件下 ,白腐菌可以直接利用废液中存在的碳水化合物降解产物作为碳源生长 ,进而开始降解其它污染物质的生化过程     

印染废水脱色菌的培育及脱色工艺

从印染厂的活性污泥中筛选分离到一株染料脱色优势菌X3,探讨了该菌在不同温度、pH值、培养时间、接种量、染料浓度等条件下对兰纳素藏青B01染料脱色的影响;优化了该菌降解废水中染料的最适条件,即采用好氧型菌株X3在33℃,pH=7的条件下进行脱色。试验表明,接种量在较宽的范围内对脱色效果影响不明显;染料浓度对脱色也有一定影响。     

印染废水中苯胺的混菌发酵体系降解和脱色

从印染厂附近的河道土壤中分离得到一株偶氮染料脱色菌,通过对其16S rDNA测序鉴定为Bacillus cereus AHR-5菌种。鉴于印染废水中苯胺和色度高的特点,以海藻酸钠为固定化载体,按照体积比1∶1将AHR-5和实验室保藏的苯胺降解菌种Acinetobactergerneri CLX-6联合构建混合菌。以单一菌作为对照,分别考察染料浓度、pH值、盐度和温度对苯胺的降解和对偶氮染料的脱色效果的影响。结果表明,当染料质量浓度100~400 mg/L、pH值7~9、盐度3%、温度30~35℃时,混合菌对苯胺的降解率和染料脱色率明显优于单一菌。     

白腐菌在造纸工业废水中的应用

综述了白腐菌在造纸工业废水的应用 ,阐述了其对木素、有机物氯化物的降解和脱色的国内外研究现状 ,并对其机理作了分析和探讨。     

几种产木素降解酶白腐菌对碱木素的降解研究

白腐菌分泌胞外氧化酶——木素降解酶。这类氧化酶底物专一性不强，除降解木素外还降解大量的污染物。首先观察4种白腐菌Pleurotus eryngii,Polyporus versicolor，Pleurotus ostreatus和Fomes lignosus在限氮和富氮培养基中产木素过氧化物酶、锰过氧化物酶和漆酶的能力，4种真菌只产锰过氧化物酶和漆酶。由于Pleurotus eryngii喇和Pleurotus eryngii产酶能力较强，用于碱木素的降解脱色，二者在限氮条件下11天对碱木素降解脱色率为65％和72％。0．6g／L Ca^2 有助于菌体生物量的增加，对产酶影响不明显；10mg／L Mn^2 有助于锰过氧化物酶活性的提高：5mg／L Cu^2 可显著提高菌体产漆酶能力，10天可使碱木素的降解脱色率达到90％。     

血红密孔菌对刚果红脱色的共培养体系优化的研究

在东北林区的4个自然保护区中采集、纯化得到34种野生大型真菌,对其氧化酶系进行了定性检测,从中选出6个白腐菌菌种进行染料脱色研究,发现血红密孔菌(Pycnoporus sanguineus)对4大类染料有高效广谱脱色作用.实验结果表明,在限氮条件下培养5天,其对刚果红脱色率最高可达89.04%;添加微量元素改良培养基的实验表明,培养5天最高脱色率可达98.01%;在此基础上添加诱导剂,则对刚果红的脱色率显著降低,实验发现添加诱导剂愈创木酚是导致脱色率降低的根本原因.用海藻酸钠固定血红密孔菌并对染料刚果红脱色5天,其脱色率达90.34%     

白腐菌木素降解酶的作用机制及其在漂白废水处理的应用

白腐菌及其酶对木素具有降解作用，效果显著，综述了白腐菌及其木素降解酶近年来在漂白废水污染控制中的应用研究进展。     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of     

The Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the latest scientific     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Anti-mutagenic compounds from corn

In previous studies with aflatoxin-contaminated corn an uncharacteristic response for AFB₁ in the Salmonella/microsomal mutagenicity assay (Ames test) was observed and the presence of anti-aflatoxin factors in the corn was suggested. In the current study, corn was extracted and fractionated using thin layer chromatography (TLC) using different developing solvent systems and the Ames test was used to monitor for anti-mutagenic activity in the corn fractions. Both Salmonella tester strains TA98 and TA100 with metabolic activation (S9) were used. Several corn fractions, at different stages in the isolation and purification process, showed anti-mutagenic dose-responses when exposed to pure AFB₁. Corn extracts were non-toxic to the tester strains and TLC fractions that showed the best anti-mutagenic dose-responses were selected for further partial characterization analyses.