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In this study, zymographic analysis for xylanase and pectinase enzymes has been carried out using agrowaste residues, wheat bran and citrus peel as well as their extracts. Isozymic forms of xylanase as well as pectinase enzyme displayed comparable zymographic bands onto agar petriplates containing either commercial substrates (xylan and pectin), agrowaste‐based substrates (wheat bran and citrus peel), or polysaccharides extracted from these agrowastes (crude xylan and pectin extracted from wheat bran and citrus peel, respectively), indicating the fact that agro residues and their extracts can be utilized as a substitute of cost‐intensive commercial substrates, xylan and pectin for zymographic analysis. This is the first report revealing the zymographic analysis of xylano–pectinolytic enzymes using agro‐based solid residues particles or polysaccharides extracted from agro‐based residues. [ABSTRACT FROM AUTHOR]

Zymographic analysis showed that all subcellular fractions of the serogroups possessed different degree of lipolytical activity. Maximal hydrolysis in the radial enzyme-diffusion reaction in agarose gel was observed in Tween-20, Tween-80, Triton Х-305 and Triton Х-405. Total hydrolase activity of urea extracts in Tween-20, Tween-80, Triton Х-405, Span-85 excelled those in the preparations of outer membranes. Maximal lipolytical activity in regard to the Tweens was shown by the preparations of urea extracts prepared from the nontoxigenic strains of O1 serogroups, while in relation to the Tritons - preparations of urea extracts from the toxigenic strains (p < 0,05).