Oxalic Acid Concentrations in Purslane (Portulaca Oleraceae L.) Is Altered by the Stage of Harvest and the Nitrate to Ammonium Ratios in Hydroponics

Palaniswamy, P.; Bible, Bernard B.; McAvoy, Richard

doi:10.17660/actahortic.2004.629.38

Cited by 18 publications

(24 citation statements)

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“…The authors also verified that the oxalic acid content vary depending on the development stage of the plant and environmental conditions. In another study, it was demonstrated that the harvest time and the nitrate to ammonium ratios affect the oxalic acid content in hydroponically grown P. oleracea plants (Palaniswamy et al, 2004). Levels ranging from 371 to 753 mg/ 100 g were reported by Petropoulos et al (2015) in this plant.…”

Section: Oxalic Acidmentioning

confidence: 83%

Wild edible plants: Nutritional and toxicological characteristics, retrieval strategies and importance for today's society

Pinela

Ferreira

2017

Food and Chemical Toxicology

137

111

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A B S T R A C TWild edible plants (WEPs) are part of the cultural and genetic heritage of different regions of the world. In times of famine and scarcity, these sources of nutrients and health-promoting compounds have received high importance mainly in rural and suburban areas. Although currently underutilized, WEPs are still consumed traditionally by different communities and are gaining relevance in today's society. However, these foods lack recognition as significant contributors to the human diet in developed areas. This review describes the nutritional value of WEPs from the North-eastern region of Portugal and points out those containing potentially toxic compounds. Several retrieval strategies are presented with the aim of promoting the (re)use, production, commercialization and conservation of WEPs (wild harvested plants and crop wild relatives), and their importance for social, economic and agro-ecological development is highlighted.

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Section: Oxalic Acidmentioning

confidence: 83%

Wild edible plants: Nutritional and toxicological characteristics, retrieval strategies and importance for today's society

Pinela

Ferreira

2017

Food and Chemical Toxicology

137

111

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“…Palaniswamy et al (2002Palaniswamy et al ( , 2004 explained that oxalic acid was influenced by nitrogen (soil mineral) and the age of leaves in hydroponic vegetable plant Portulaca oleraceae L. Sumarwoto (2008) explained that P and K fertilizer (soil mineral) influenced corm size (diameter, thickness, and weight of corm) of Amorphophallus muelleri, but no information about corm oxalate content. Ambarwati and Murti (2001) reported that corm diameter and weight of Amorphophallus variabilis positively and significantly correlated with glucomannan and starch, and negatively correlated with corm oxalate content.…”

Section: The Examination Of Goodness Of Fit Modelmentioning

confidence: 99%

A model of relationship between climate and soil factors related to oxalate content in porang (Amorphophallus muelleri Blume) corm

et al. 2010

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Indriyani S, Arisoesilaningsih E, Wardiyati T, Purnobasuki H (2011) A model of relationship between climate and soil factors related to oxalate content in porang (Amorphophallus muelleriBlume) corm. . The abiotic environment as well as the biotic environment, involved climate and soil affect directly or indirectly to plant growth as well as plant substance. The objective of the research was to obtain a model of relationship between climate and soil factors related to oxalate content in porang corm. Porang corms were collected from five locations of porang agroforestry in East Java. The locations were (i) Klangon Village, Saradan Subdistrict, Madiun District; (ii) Klino Villlage, Sekar Subdistrict, Bojonegoro District; (iii) Bendoasri Village, Rejoso Subdistrict, Nganjuk District; (iv) Sugihwaras Village, Nggluyu Subdistrict, Nganjuk District and (v) Kalirejo Village, Kalipare Subdistrict, Malang District. Geography variable consist of altitude. Climate variables consist of percentage of radiation, temperature and rainfall. Soil variables consist of electrical conductivity, pH, soil specific gravity, soil organic matter, available of calcium, and cation exchange capacity (CEC). Vegetation variables consist of species of plant tree and percentage of coverage. Porang vegetative growth variables consist of plant height, number of bulbil, canopy diameter, and petiole diameter. Corm variables consist of corm diameter, corm weight, and corm specific gravity. Oxalate variables consist of total oxalate, soluble oxalate, insoluble oxalate, and density of calcium oxalate crystal. Oxalate contents were measured based on AOAC method. All of variables were collected from first to fourth growth period of porang. Data were analyzed by smartPLS (Partial Least Square) software. The results showed that there were significantly direct effect between altitude and temperature, altitude and CEC of soil, temperature and CEC of soil, altitude and percentage of coverage, temperature and percentage of coverage, CEC of soil and percentage of coverage, CEC of soil and petiole diameter, petiole diameter and corm diameter, and petiole diameter and corm oxalate content. There were no significantly direct effect among altitude, temperature, percentage of coverage and petiole diameter; and among corm total oxalate, soluble oxalate, insoluble oxalate, and density of calcium oxalate crystal and corm diameter. The value of Goodness of Fit of the developing model was R²=0.99.

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“…The leaf of this plant has diverse biological activities, including hypocholesterolemic, antidiabetic, hypertensive agent [8][9][10][11], and regulate thyroid hormone [12], central nervous system, digestive system, nutrition and metabolism. These plant is also reported to be hepato protective against anti tubercular drug such as ionized and rifampicin [13,14], and being studied for its anti-inflammatory, antimicrobial, diuretic [15][16][17], antibiotic [18], hypotensive [6], and antimicrobial properties [19]. An immune enhancing polysaccharide [20] and niaziminin, having structural requirement to inhibit tumor promoter induced Epstein Barr virus activation have been reported from the leaves [21].…”

Section: Introductionmentioning

confidence: 99%

Phytochemical and Antibacterial Activity of Moringa Oleifera Available in the Market of Mekelle

Amabye¹

2016

JAPLR

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The aim of the present study was to evaluate the antibacterial activity of Moringa oleifera leaf extracts, Escherichia coli, Pseudomonas aeroginosa, Staphylococcus aureus, Proteus vulgaris, Streptococcus mutans, Bacillus subtilus, and Staphylococcus epidermidis bacteria were used. Phytochemical analyses of the leaf in solvents of varying polarity with aqueous, ethanol were also carried out. The phytochemical screening indicated the presence of flavonoids, tannins, steroid, alkaloid, saponins etc., in the both extracts. Well diffusion method was used to assess the antibacterial effect of the extracts on micro-organisms. The ethanolic and aqueous extract were active against all strains but the ethanol leaf extract showed maximum activity against Streptococcus mutant and aqueous extract shows maximum activity against Proteus vulgaris. The research showed that the higher reducing power of the aqueous extract could be due to the better solubility of the antioxidant components in water whereas the predominant antibacterial activity in organic solvent extracts as compared to aqueous extracts, indicates that the active components responsible for the bactericidal activity are more soluble in organic solvents. These studies provide an evidence to support traditional medicinal uses of the plant.

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Oxalic Acid Concentrations in Purslane (Portulaca Oleraceae L.) Is Altered by the Stage of Harvest and the Nitrate to Ammonium Ratios in Hydroponics

Cited by 18 publications

References 0 publications

Wild edible plants: Nutritional and toxicological characteristics, retrieval strategies and importance for today's society

Wild edible plants: Nutritional and toxicological characteristics, retrieval strategies and importance for today's society

A model of relationship between climate and soil factors related to oxalate content in porang (Amorphophallus muelleri Blume) corm

Phytochemical and Antibacterial Activity of Moringa Oleifera Available in the Market of Mekelle

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