A dynamic mathematical model has been developed and validated to describe the synthesis of pectate lyases (Pels), the major virulence factors in Dickeya dadantii. This work focuses on the simultaneous modeling of the metabolic degradation of pectin by Pel enzymes and the genetic regulation of pel genes by 2-keto-3-deoxygluconate (KDG), a catabolite product of pectin that inactivates KdgR, one o...

Problem statement: In our earlier study, dietary pectin has been shown to promote nephrocalcinosis in rats when compared with the feeding of cellulose. It was not known whether this pectin effect relates to its structure or to its monosaccharide component, galacturonic acid. Approach: The effects of dietary pectin, galacturonic acid and glucose on kidney calcification were studied in female rat...

This study aimed at understanding softening in Jonagold apple (Malus×domestica Borkh.) fruits, by investigating pectin modifications and the evolution of pectin-modifying enzymes during postharvest storage and ripening. Jonagold apples were harvested at commercial maturity and stored at different temperatures and controlled atmosphere conditions for 6 months, followed by exposure to ambient she...

The effects of Ca2+ (0–75 mg/g pectin) and sucrose (0–40%, w/w) or sweeteners (0.1, 0.05% stevia saccharin) pH (3.0, 4.5, 6.8) on the rheological properties gels formed with sunflower pectins purified by conventional method (Conv-pectin), microfiltration (MF-pectin) ultrafiltration (UF-pectin) were investigated. main objective was to develop alternative low-calorie pectin without altered gelati...

BACKGROUND Production of heterologous proteins in the E. coli periplasm, or into the extracellular fluid has many advantages; therefore naturally occurring signal peptides are selected for proteins translocation. The aim of this study was the production in high yields of a recombinant pectin lyase that is efficiently secreted and the encapsulation of transformed E. coli cells for pectin degrada...

Introduction: The present study aimed to evaluate the effects of pectin supplementation and 14 weeks of endurance training on the serum atrial natriuretic peptide (ANP) levels and lipid profile of obese pregnant mice. Methods: This experimental study was conducted on 40 female laboratory mice (mean weight: 30+5 g...

The application of pectin as an emulsifier in oil-in-water (O/W) emulsion does not guarantee its stability for a long time. In fact, pectin is not an effective emulsifier because of its hydrophilic structure. On the other hand, pea protein isolate (PPI) does not also have a proper emulsifying activity because of its hydrophobic structure. The main objective of this study was to investigate the ...

A study was conducted to determine the effects of different levels of apple juice concentrate (AJC), blackcurrant concentrate (BCC) and pectin on the moisture content, water activity, color, texture and ascorbic acid content of apple-blackcurrant fruit leather using the response surface methodology. The results showed the moisture content increased with increasing pectin level and with greater ...

Pectin, a naturally occurring polysaccharide, has in recent years gained increasingly in importance. The benefits of natural pectin are also more and more appreciated by scientists and consumer due to its biodegradability. Pectin is the methylated ester of polygalacturonic acid. It is commercially extracted from citrus peels and apple pomace under mildly acidic conditions. Pectins are divided i...

Nitric oxide (NO) is an important bioactive molecule involved in cell wall metabolism, which has been recognized as a major target of aluminium (Al) toxicity. We have investigated the effects of Al-induced NO production on cell wall composition and the subsequent Al-binding capacity in roots of an Al-sensitive cultivar of wheat (Triticum aestivum L. cv. Yang-5). We found that Al exposure induce...