International Biodeterioration最新文献

Microscopic examination of keratin substrates subjected to the action of the enzymes of Streptomyces fradiae 受传统链霉菌酶作用的角蛋白底物的显微镜检查

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90020-R

Maria Kałuzewska, Krystyna Wawrzkiewicz, Jerzy Łobarzewski

引用次数: 22

Influence of physico-chemical stress on biodegradability of car engine lubricating oil 理化应力对汽车发动机润滑油生物降解性的影响

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90054-U

G. Okpokwasili, B. A. Okorie

引用次数: 18

Fungal contamination of oil paintings in Japan 日本油画的真菌污染

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90031-L

Mayumi Inoue, Masako Koyano

引用次数: 18

Deterioration of anti-corrosive paints by extracellular microbial products 细胞外微生物产物对防腐涂料的腐蚀

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90007-E

M. Stranger-Johannessen, E. Norgaard

引用次数: 7

The digestion of wool fibres in the alimentary system of Anthrenus flavipes larvae 黄棘虫幼虫消化系统对羊毛纤维的消化

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90061-U

J.P. Trivedi, A.P. Srivastava, K. Narain, R.C. Chatterjee

{"title":"The digestion of wool fibres in the alimentary system of Anthrenus flavipes larvae","authors":"J.P. Trivedi, A.P. Srivastava, K. Narain, R.C. Chatterjee","doi":"10.1016/0265-3036(91)90061-U","DOIUrl":"https://doi.org/10.1016/0265-3036(91)90061-U","url":null,"abstract":"<div><p>Digestion of structural components of the wool fibre in the alimentary system of <em>Anthrenus flavipes</em> larvae has been studied by optical and scanning electron microscopy. The larvae have been shown to bite off wool fragments of varying length ranging from 20 to 100 μm which rapidly pass through the foregut and accumulate in a large sac-like midgut. Digestion of outer cuticular scales occurs in the midgut region. Large numbers of symbiotic bacterial cells facilitate extensive digestion of keratin fibrils of the cortex in the ileum region, resulting in complete structural disintegration of the wool fibre. Actively feeding amoeba-like protozoans gradually replace the bacterial flora in the posterior ileum and rectum regions. Digested wool components and microbial biomass gradually become compact due to absorption of nutrient fluid in the hindgut. In the final stage of digestion, the compact faecal pellets consisting of remaining undigested and partially digested wool fragments and the microbial biomass, containing mainly protozoans and lysed and intact bacterial cells, lie in a chain in the rectum before excretion.</p></div>","PeriodicalId":13629,"journal":{"name":"International Biodeterioration","volume":"27 4","pages":"Pages 327-336"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0265-3036(91)90061-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91656658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Biodeterioration Society news items 生物退化学会新闻

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90066-Z

引用次数: 0

Multivariate analysis applied to the conservation of monuments: Lichens on the Roman aqueduct Anio Vetus in S. Gregorio 多变量分析应用于古迹保护:圣格雷戈里奥的罗马渡槽Anio Vetus上的地衣

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90039-T

M. Monte

引用次数: 19

The degradation of preservatives by microorganisms 微生物防腐剂的降解

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90010-O

W.B. Hugo

引用次数: 23

Fungal deteriogens from preservative treated service timber packing in water cooling towers 从经防腐处理的水冷却塔木材填料中提取的真菌去污剂

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90056-W

K. Udaiyan, S. Manian

引用次数: 7

Biodeterioration in Rice (Oryza sativa L.) due to low, medium and high moisture 水稻(Oryza sativa L.)在低、中、高水分条件下的生物变质

International Biodeterioration Pub Date : 1991-01-01 DOI: 10.1016/0265-3036(91)90052-S

S. Anthoni Raj, K. Singaravadivel

{"title":"Biodeterioration in Rice (Oryza sativa L.) due to low, medium and high moisture","authors":"S. Anthoni Raj, K. Singaravadivel","doi":"10.1016/0265-3036(91)90052-S","DOIUrl":"10.1016/0265-3036(91)90052-S","url":null,"abstract":"<div><p>The changes in moisture content, microflora, biochemical constituents and dry matter were assessed in ADT 31 and TKM 9 paddy (Rice: <em>Oryza sativa</em> L.) grains with low, medium and high moisture content stored for 90 days without drying, just after harvest in rainy humid weather. The drop in moisture was conspicuous only after 15 days of storage. The fungal flora increased rapidly at all moisture levels within a week with a two-to-fourfold increase in low and medium moisture and almost sixfold in high moisture paddy. There was also an increase in the bacterial flora in grains at high moisture levels. In both the varieties of paddy, the sugars increased upon storage and this was relatively higher with increased moisture levels. On the other hand, reducing sugars decreased upon storage and the decrease was greater in high moisture lots. The amylase activity showed a general increase in all moisture lots. An increase in amino acids was observed at all moisture levels up to 15 days after which values fluctuated depending upon the moisture content. The phenolic compounds in paddy decreased upon storage at all moisture levels. The biodeterioration resulted in a dry matter loss of 2·09, 2·99 and 7·67% in ADT 31 and 1·96 and 5·88% in TKM 9 paddy after 90 days respectively in low, medium and high moisture paddy. This also resulted in a decreased in the outturn of milled rice after raw or parboiled milling.</p></div>","PeriodicalId":13629,"journal":{"name":"International Biodeterioration","volume":"27 3","pages":"Pages 237-248"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0265-3036(91)90052-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83045749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9