If Homogalacturonan Were a Side Chain of Rhamnogalacturonan I. Implications for Cell Wall Architecture

Vincken, Jean‐Paul; Schols, Henk A.; Oomen, Roelof; McCann, Maureen C.; Ulvskov, Peter; Voragen, A.G.J.; Visser, Richard G. F.

doi:10.1104/pp.103.022350

Cited by 549 publications

(372 citation statements)

References 41 publications

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“…The non-esterified galacturonic acid units can be either free acids (carboxyl groups) or salts with sodium, potassium or calcium. presented (Vincken et al, 2003). Diagram also represents preparation of MCP from pectin (Pienta et al, 1995).…”

Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

“…Another structural type of pectin is Rhamnogalacturonan II (RG-II), a less frequent complex, which is a highly branched polysaccharide. Rhamnogalacturonan II is classified by some authors within the group of substituted galacturonans since the rhamnogalacturonan II backbone is made exclusively of D-galacturonic acid units (Vincken et al, 2003;Niture, 2008). Isolated pectin has a molecular weight of typically 60-130,000 g/mol and varies in origin and extraction conditions.…”

Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

“…Substituted galacturonans are characterized by the presence of saccharide appendant residues (such as D-xylose or D-apiose in the respective cases of xylogalacturonan and apiogalacturonan) branching from a backbone of D-galacturonic acid residues. Rhamnogalacturonan I pectins (RG-I) contain a backbone of the repeating disaccharide: (1,4)-α-Dgalacturonic acid-(1,2)-α-L-rhamnose-(1) (Ridley et al, 2001;Vincken et al, 2003). From many of the rhamnose residues, side chains of various neutral sugars branch off (Fig.…”

Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Plant Pectin: A Potential Source for Cancer Suppression

Niture¹

2013

American Journal of Pharmacology and Toxicology

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Pectin is a branched polysaccharide present widely in a variety of fruits. It has been of high interest to cancer biologists due to its involvement in metal/carcinogen detoxification and its anti-carcinogenic properties. In particular, Citrus Pectin (CP) and Modified Citrus Pectin (MCP) have been shown to have a significant inhibitory role in cancer cell metastasis, invasion, angiogenesis and survival. The interactions and inactivation of oncogenes by CP and MCP in prostate, breast, liver, lung, melanoma and multiple myeloma cancers suggest that CP and MCP could play an important role in cancer chemotherapy and chemoprevention. In this review, we focus on the biological function of pectin with respect to its properties, sources, structure and its potential role in carcinogen detoxification and cancer suppression.

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Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

Section: Pectin Structure and Some Propertiesmentioning

confidence: 99%

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Plant Pectin: A Potential Source for Cancer Suppression

Niture¹

2013

American Journal of Pharmacology and Toxicology

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“…Another pectic material, rhamnogalacturonan I (RGI), comprises a backbone of alternating (1 fi 2)a-L-rhamnose-(1 fi 4)a-D-galacturonic acid containing mainly arabinan and galactan side chains (Rose et al, 2000). RGI apparently functions as a scaffolding to which other pectins are attached (Vincken et al, 2003). Table 1 shows the composition of selected plant biomass substrates and the resulting sugars generated by depolymerization.…”

Section: Introductionmentioning

confidence: 99%

Microbial conversion of sugars from plant biomass to lactic acid or ethanol

2008

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SummaryConcerns for our environment and unease with our dependence on foreign oil have renewed interest in converting plant biomass into fuels and 'green' chemicals. The volume of plant matter available makes lignocellulose conversion desirable, although no single isolated organism has been shown to depolymerize lignocellulose and efficiently metabolize the resulting sugars into a specific product. This work reviews selected chemicals and fuels that can be produced from microbial fermentation of plant-derived cell-wall sugars and directed engineering for improvement of microbial biocatalysts. Lactic acid and ethanol production are highlighted, with a focus on engineered Escherichia coli.

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“…The average world annual potato harvest is 367.75 million tons. A large part of the potato is used for the production of potato starch [1], which in turn is widely used in the food and pharmaceutical industries.…”

Section: Introductionmentioning

confidence: 99%

The use of enzyme preparations for pectin extraction from potato pulp

Hrabovska¹,

Pastukh²,

Lysyi³

et al. 2018

Ukr. food j.

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Introduction. The use of enzyme preparations at various stages of the technological process of extracting pectin from potato pulp and their influence on yield and purity of pectin has been studied.Materials and methods. The hydrolysis of potato pulp's protopectin was carried out in various ways using hydrochloric acid, enzymatic preparations of cellulolytic and amylolytic activity at different stages of the technological process and in a combined method.Results and discussion. The effect of a complex enzyme preparation of cellulase on the final produce yield and quality has been researched. It was stated that adding the enzyme preparation at the stage of preliminary treatment of raw materials in an amount of 0,1% of the total dry matter mass (accordingly 9 CU/g of raw material) in combination with acid-thermal hydrolysis leads to an increase in the recovery of alcohol-sugared potato pectin from 7% to 13,6%.The positive influence of amylolytic enzyme preparations on the physical and chemical properties of potato pectin has been proved. Dosage of the enzyme was carried out in the amount of 3 AU/g of absolutely dry starch. The use of amylolytic enzyme preparations in order to process potato pulp in combination with acid hydrolysis raised the uronide component of potato pectin from 27.4% to 42%.The study of the structure of potato pectin samples, extracted under different conditions, by comparison of infrared spectra has been carried out. We have used the method of Xray diffraction analysis to investigate changes in the structure of potato pectin obtained by different methods and compared it with potato starch. It is proved that the use of enzymes at the stage of preliminary processing of raw materials increases the yield, purity and complexing ability of pectin.Conclusions. The use of cellulolytic enzyme preparations and -amylase in the technology of pectin extraction from a potato pulp in combination with acid-thermal hydrolysis leads to an increase in the yield and purity of potato pectin.

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If Homogalacturonan Were a Side Chain of Rhamnogalacturonan I. Implications for Cell Wall Architecture

Cited by 549 publications

References 41 publications

Plant Pectin: A Potential Source for Cancer Suppression

Plant Pectin: A Potential Source for Cancer Suppression

Microbial conversion of sugars from plant biomass to lactic acid or ethanol

The use of enzyme preparations for pectin extraction from potato pulp

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