دانلود رایگان مقاله لاتین پلی ساکارید از سایت الزویر
عنوان فارسی مقاله:
پلی ساکارید و اجزای وزن مولکولی کم اپونیتا فیکوس ایندیکا: ساختار و خواص ترمیم پوست
عنوان انگلیسی مقاله:
The polysaccharide and low molecular weight components of Opuntia ficus indica cladodes: Structure and skin repairing properties
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
In traditional medicine, herbs and plants containing mucilage, polysaccharides and starch are widely employed in relieving skin epithelium wound and mucosal irritation (Trombetta et al., 2006). Nowadays, skin wound-healing and repairing effects have been demonstrated for some of traditionally used herbs, such as Calendula officinalis (Parente et al., 2012), Malva silvestris (Pirbalouti, Azizi, Koohpayeh, & Hamedi, 2010), Typha latifolia (Gescher & Deters, 2011). The beneficial effects in promoting skin repair have been observed on various phases of wound-healing suchas in bioadhesive ability, immunomodulation, cell–cell and cellmatrix interactions and collagen synthesis (Gescher & Deters, 2011; Parente et al., 2012; Pirbalouti et al., 2010). The prickly pear cactus Opuntia ficus-indica (L.) is a tropical and subtropical plant able to grow in arid climates, such as the Mediterranean and Central America regions. It has recently received an ever increasing attention from researchers worldwide for its multivalent pharmaceutical and cosmetical potential (Kaur, Kaur, & Sharma, 2012; Rizza, Frasca, Nicholls, Puglia, & Cardile, 2012; Trombetta et al., 2006). Cladodes are particularly rich in carbohydrate-containing polymers, known as mucilage, made up of several sugar residues such as arabinose, galactose, rhamnose, xylose and galacturonic acid (Sepúlveda, Sáenz, Aliaga, & Aceituno, 2007). It has been previously reported that polysaccharides from Opuntia plants can be used as mucoprotective agents due to their capability to form a molecular network and to retain huge amount of water. Thus, they can act as a protective layer on mucosal surfaces accelerating the re-epithelization of dermal wound (Galati, Monforte, Tripodo, d’Aquino, & Mondello, 2001; Galati, Pergolizzi, Miceli, Monforte, & Tripodo, 2002; Kaur et al., 2012). In this context, Trombetta et al. (2006) demonstrated thattopical application of polysaccharides from Opuntia cladodes on skin lesions in rats can accelerate the re-epithelization by affecting cell-matrix interactions and by modulating laminin laying, owing to their peculiar hygroscopic, rheological and viscoelastic properties. Moreover, polysaccharides isolated from Opuntia cladodes have highlighted an interesting and remarkable bio-adhesive effect on mucosal surface in some in vitro cell models (Rizza et al., 2012). However, previous studies have been focused only on the purified polysaccharide fraction from Opuntia cladodes thus no information has been reported to date about the whole extract and other non-carbohydrate components. Thus, to the best of our knowledge, very little is known about the structure-activity relationship between above described skin wound-healing effects and the cladode mucilage molecular composition. Here we report the complete structural characterization of the polysaccharide and non-polysaccharide low molecular weight components from Opuntia ficus-indica (L.) (referred to here on as Opuntia) cladodes mucilage. The repairing activity of the isolated components was also evaluated by an innovative cell model mimicking in vivo conditions.
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کلمات کلیدی:
Molecular weight distributions of polysaccharides ... - RSC Publishing pubs.rsc.org › Journals › Analytical Methods by K Kuroda - 2015 - Cited by 4 - Related articles Polysaccharides and lignin were clearly detected independently with the use of both a. ... Molecular weight distributions of polysaccharides and lignin extracted from ... Polysaccharides with low molecular weights were obtained at 25 °C in 2 h with ... and easily analyse molecular weight distributions of components of plants. Soil Components: Volume 1: Organic Components https://books.google.com/books?isbn=3642659152 J. E. Gieseking - 2012 - Science Volume 1: Organic Components J. E. Gieseking ... This aids in the purification of the high molecular weight polysaccharides by gel filtration ... separation to be obtained between polysaccharides and lower molecular weight humic materials. Humus Chemistry: Genesis, Composition, Reactions https://books.google.com/books?isbn=0471594741 F. J. Stevenson - 1994 - Science The first step in recovering polysaccharides from the complex mixture is acidification to pH 2 to 3 to precipitate humic ... and low-molecular-weight components. Food Polysaccharides and Their Applications https://books.google.com/books?isbn=0824793536 Alistair M. Stephen - 1995 - Technology & Engineering Molecular Weight Determination With some exceptions, notably acacia gums of low molecular weight, e.g., those of A. ... gum polysaccharides are poly disperse, so that molecular size and composition can be determined only as averages. The European Polysaccharide Network of Excellence (EPNOE): Research ... https://books.google.com/books?isbn=3709104211 Patrick Navard - 2012 - Science Wood chemical components can be roughly divided into high molecular weight and low molecular weight compounds. Cell wall components such as cellulose, ...
