Abstract Dioscoreaceae or yam is a family of tuber that comprises many members with variability in utilization and their intensity consumption. This has wide used not only as food but also for medical purposes due to bioactive compounds. One the wild ( Dioscorea hispida Dennst), rich carbohydrates an obstacle high cyanide level. Historically, along cassava, staple some places Indonesia. There l...

The reliable and accurate determination of oxidized functionalities in cellulosic substrates still represents a largely unsolved problem in cellulose chemistry. Aldehyde and keto structures are “hot spots” along the cellulose chain, where further chain cleavage might occur. Carbonyls are also relevant for processes such as yellowing or aging. Conventional approaches (copper number, oxime or cya...

active HNLs lacking FAD are found in some cyanogenic a-Hydroxynitrile lyase (HNL, acetone-cyanohydrin plants, e.g., flax, sorghum, rubber tree, and cassava. lyase, EC 4.1.2.37) was purified to homogeneity from Both types of HNLs show substrate specificity for eipetioles of cassava (Manihot esculenta Crantz). The puther aromatic or aliphatic cyanohydrins. rified HNL is a homotetramer with a subu...

Cyanation reactions of carbonyl compounds with methyl cyanoformate or acetyl cyanide catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) were examined. Using methyl cyanoformate, the corresponding cyanohydrin carbonates were readily obtained in high yield for aromatic and aliphatic aldehydes and ketones. Similar results were obtained when acetyl cyanide was used as the cyanide sou...

Solketal, the chiral acetonide of glycerol, has been employed as starting material in design a novel punctually phosphate sodium salt for catalytic applications organic and asymmetric synthesis. The racemate two enantiomers substrate are economic commercially available, straightforwardly prepared high yields from naturally occurring feedstocks. Therefore, remarkably, both final catalyst can be ...