A comprehensive review of work pertinent to changes in the separation zone prior to abscission is presented. Since these changes are largely pectic in nature the involvement of pectic enzymes is suggested. The results obtained for the role of pectin methylesterase ( PME) in abscission arc as follows: ( 1 ) A localization of PME activity in the abscission zone of tobacco pedicels was established...

Rotavirus can lead to decreasing gut barrier function and diarrhea of children and young animals. Apple pectic oligosaccharide treatment reduced diarrhea in rotavirus-infected piglets. This study was conducted to explore whether apple pectic oligosaccharide administration could protect gut barrier function of piglets against rotavirus infection. A total of 28 crossbred weaned barrows were allot...

BACKGROUND Collagen-based three-dimensional (3D) in vitro systems have been introduced to study the physiological states of cells. As a biomolecule, collagen is usually extracted from terrestrial animals whilst aquatic animals like squid contain large amounts of collagen. METHODS In order to make effective use of marine organisms, we selected Persian Gulf squid in 2015 to extract the required...

Natural polysaccharides w ere exam ined for their activity as elicitors o f phytoalexins and flavonoids in alfalfa cotyledons. O nly tw o polysaccharides, lam inaran and pectic acid, had e lic­ itor activity. Laminaran, w hich was m ore active than pectic acid, was hydrolyzed by tunicase and the hydrolysate was subjected to charcoal and gel filtration colum ns. Introduction o f the pyridylam in...

IT has long been maintained that pectose, or proto-pectin as it is called by some authors, is an insoluble constituent of plant tissues, associated with cellulose in the cell-walls but exhibiting none of the properties of that substance. It has also been claimed by the majority of investigators that during the ripening of fruit, pectose decomposes into a soluble form, generally known as pectin,...

The composition, integrity, and architecture of the macromolecular matrix of cell walls, collectively referred to as cell wall ultrastructure, exhibits variation across species and organs and among cell types within organs. Indirect approaches have suggested that modifications to cell wall ultrastructure occur in response to abiotic stress; however, modifications have not been directly observed...

This study aims to characterize the pectic oligosaccharides (POSs) generated from enzymatically hydrolyzed citrus peel pectin using a selected enzyme. Pectinex Ultra AFP was used depolymerize into POSs. The POSs were analyzed high-performance liquid chromatography (HPLC) and coupled with mass spectrometer (LC/MS) methodology determine composition of monosaccharides average molar distribution ba...