نتایج جستجو برای: pectin

تعداد نتایج: 4391  

Journal: :Journal of Applied Polymer Science 2022

Pectin-Ag nanocomposites with a core-shell structure are synthesized by the “green chemistry” method based on reduction of silver nitrate pectin (amidated, low-, or high methoxylated) in an alkaline medium at room temperature. TEM and DLS measurements show that average size inorganic core (10–30 nm) hydrodynamic diameter nanocomposite (284.8–649.2 depend type pectin. The films pectin-Ag polyvin...

2013
Chaowen Xiao Charles T. Anderson

Pectin is a component of the cell walls of plants that is composed of acidic sugar-containing backbones with neutral sugar-containing side chains. It functions in cell adhesion and wall hydration, and pectin crosslinking influences wall porosity and plant morphogenesis. Despite its low abundance in the secondary cell walls that make up the majority of lignocellulosic biomass, recent results hav...

Journal: :Natural product research 2013
Shaojuan Lai Fusheng Chen Lifen Zhang Hongshun Yang Yun Deng Bao Yang

Nanostructure of water-soluble pectin (WSP) and chelate-soluble pectin (CSP) of two Chinese cherry (Prunus pseudocerasus L.) cultivars (soft cultivar 'Caode' and crisp cultivar 'Bende') with two different ripening stages were characterised using atomic force microscopy. Both cultivars shared some common values of chain widths for WSP or CSP, and both pectins shared several values of chain width...

Journal: :Reproduction, nutrition, developpement 1982
E Sacquet C Leprince M Riottot

Axenic and holoxenic rats were fed with a semi-synthetic diet containing 5 p. 100 pectin as the only fiber. Although the microbial flora of the digestive tract converted most of the bile acids in holoxenic rats, it hardly changed the other characteristics of cholesterol and bile acid metabolisms, except intestinal bile salt pools which were much larger in the axenic rats. When the pectin-contai...

2009
Aurora Martínez-Trujillo Juan S. Aranda Carlos Gómez-Sánchez Blanca Trejo-Aguilar Guillermo Aguilar-Osorio

Growth and enzymes production by Aspergillus flavipes FP-500 were evaluated on pectin, polygalacturonic acid, galacturonic acid, arabinose, rhamnose, xylose, glycerol and glucose at different initial pH values. We found that the strain produced exopectinases, endopectinases and pectin lyases. Exopectinases and pectin lyase were found to be produced at basal levels as constitutive enzymes and th...

Journal: :Fungal genetics and biology : FG & B 2012
Bruno V de Oliveira Gleidson S Teixeira Osvaldo Reis Joan G Barau Paulo José P L Teixeira Maria Carolina S do Rio Romênia R Domingues Lyndel W Meinhardt Adriana F Paes Leme Johana Rincones Gonçalo A G Pereira

The hemibiotrophic basidiomycete fungus Moniliophthora perniciosa, the causal agent of Witches' broom disease (WBD) in cacao, is able to grow on methanol as the sole carbon source. In plants, one of the main sources of methanol is the pectin present in the structure of cell walls. Pectin is composed of highly methylesterified chains of galacturonic acid. The hydrolysis between the methyl radica...

Journal: :Phytotherapy research : PTR 2007
E M Galati M T Monforte N Miceli M R Mondello M F Taviano M Galluzzo M M Tripodo

Opuntia ficus indica cladodes possess a protective action against ethanol-induced ulcer in the rat. The major components of cladodes are carbohydrate polymers, mainly mucilages and pectin. To clarify the cytoprotective effects of cladodes on experimental ethanol-induced ulcer in rat, mucilages and pectin were extracted and were administered instead of cladodes. The above mentioned effects induc...

2010
Jesper Harholt Henrik Vibe Scheller

Villum Kann Rasmussen Centre Pro-active Plants, Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Copenhagen, DK–1871 Frederiksberg C, Copenhagen, Denmark (J.H.); Feedstocks Division, Joint BioEnergy Institute, Emeryville, California 94608 (A.S., H.V.S.); and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Emeryville, California 94608 (...

Journal: :Plant physiology 1994
M. B. Stephenson M. C. Hawes

We tested predictions of the hypothesis that pectin methylesterase in the root cap plays a role in cell wall solubilization leading to separation of root border cells from the root tip. Root cap pectin methylesterase activity was detected only in species that release large numbers of border cells daily. In pea (Pisum sativum) root caps, enzyme activity is correlated with border cell separation ...

2015
Frida Fåk Greta Jakobsdottir Evelina Kulcinskaja Nittaya Marungruang Chrysoula Matziouridou Ulf Nilsson Henrik Stålbrand Margareta Nyman

The aim of this study was to investigate how physico-chemical properties of two dietary fibres, guar gum and pectin, affected weight gain, adiposity, lipid metabolism, short-chain fatty acid (SCFA) profiles and the gut microbiota in male Wistar rats fed either low- or high-fat diets for three weeks. Both pectin and guar gum reduced weight gain, adiposity, liver fat and blood glucose levels in r...

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