Malva: Food, Medicine and Chemistry

Azab, Abdullatif

doi:10.17628/ecb.2017.6.295-320

Cited by 12 publications

(12 citation statements)

References 130 publications

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“…Furthermore, M. parviflora was reported to possess many pharmacological activities comprising antibacterial, antifungal, antidiabetic, antioxidant, anti-inflammatory, neuroprotective, hepatoprotective, anti-irritant, wound healing, analgesic and antiulcerogenic activities [ 12 ]. These pronounced activities are mainly attributed to its richness with secondary metabolites, such as flavonoids and phenolic acids [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Malva parviflora Leaves Mucilage: An Eco-Friendly and Sustainable Biopolymer with Antioxidant Properties

et al. 2021

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Malva parviflora L. is an edible and medicinal herb containing mucilaginous cells in its leaves. Mucilage obtained from M. parviflora leaves (MLM) was extracted in distilled water (1:10 w/v) at 70 °C followed by precipitation with alcohol. Preliminary phytochemical tests were performed to assess the purity of the extracted mucilage. Results showed that the yield of mucilage was 7.50%, and it was free from starch, alkaloids, glycosides, saponins, steroids, lipids and heavy metals. MLM had 16.19% carbohydrates, 13.55% proteins and 4.76% amino acids, which indicate its high nutritional value. Physicochemical investigations showed that MLM is neutral and water-soluble, having 5.84% moisture content, 15.60% ash content, 12.33 swelling index, 2.57 g/g water-holding capacity and 2.03 g/g oil-binding capacity. The functional properties, including emulsion capacity, emulsion stability, foaming capacity and stability increased with increased concentrations. Micromeritic properties, such as bulk density, tapped density, Carr’s index, Hausner ratio, and angle of repose, were found to be 0.69 g/cm3, 0.84 g/cm3, 17.86%, 1.22 and 28.5, respectively. Scanning electron microscopy (SEM) showed that MLM is an amorphous powder possessing particles of varying size and shape; meanwhile, rheological studies revealed the pseudoplastic behavior of MLM. The thermal transition process of MLM revealed by a differential scanning calorimetry (DSC) thermogram, occurring at a reasonable enthalpy change (∆H), reflects its good thermal stability. The presence of functional groups characteristic of polysaccharides was ascertained by the infrared (IR) and gas chromatography/mass spectrometry (GC/MS) analyses. GC revealed the presence of five neutral monosaccharides; namely, galactose, rhamnose, arabinose, glucose and mannose, showing 51.09, 10.24, 8.90, 1.80 and 0.90 mg/g of MLM, respectively. Meanwhile, galacturonic acid is the only detected acidic monosaccharide, forming 15.06 mg/g of MLM. It showed noticeable antioxidant activity against the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical with an IC50 value of 154.27 µg/mL. It also prevented oxidative damage to DNA caused by the Fenton reagent, as visualized in gel documentation system. The sun protection factor was found to be 10.93 ± 0.15 at 400 µg/mL. Thus, MLM can be used in food, cosmetic and pharmaceutical industry and as a therapeutic agent due to its unique properties.

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Section: Introductionmentioning

confidence: 99%

Malva parviflora Leaves Mucilage: An Eco-Friendly and Sustainable Biopolymer with Antioxidant Properties

et al. 2021

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“…Malva sylvestris L. (common mallow) is considered a native species in Europe, North Africa, and Asia. Numerous studies have investigated the pharmacological properties of M. sylvestris, notably in the flowers and the leaves, and its use as a medicinal plant [25,26]. Moreover, M. sylvestris has been reported as a potential tinctorial plant [27], and a greenyellow color could be obtained in textiles [28].…”

Section: Introductionmentioning

confidence: 99%

Phytomanagement of a Trace Element-Contaminated Site to Produce a Natural Dye: First Screening of an Emerging Biomass Valorization Chain

et al. 2021

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The study of different possible biomass valorization routes is crucial in order to diversify phytomanagement options, allowing the landowner/stakeholder to choose the best option based on site characteristics and the benefits of local value chains. In the current study, field and laboratory experiments were conducted to assess the suitabilitity of Malva sylvestris L. for the phytoattenuation of a dredged sediment disposal site contaminated with trace elements (trace element (Cd, Cu, Pb, and Zn). The selected crop was Malva sylvestris, a flowering plant from which a colourant can be extracted to be used in dying of textiles as a way to valorize the produced biomass grown on this contaminated land. Under the conditions of the investigated site, the analysis of TE in the sediment and the biomass matrix showed no effect of M. sylvestris on the sediment TE contamination mobility with an excluder phenotype (Bioconcentration factor < 1). Metal concentrations were found to be the highest in the leaves followed by in the stem and flower. The dye extract obtained from the flower part of M. sylvestris permitted the silk alum-pretreated fabric to be dyed yellow, and the TE concentration in the dyed textile fabrics respected the threshold values set by OEKO-Tex standard 100.

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“…Malva species contain a lot of mucilage, malvin, flavonoids, terpenoids, polysaccharides, and vitamin A. Therefore, leaves, flowers, roots, and seeds as well as the whole herb are used in traditional phytotherapy, medicine, horticulture, and functional food industry [6][7][8][9][10]. Some species (e.g., M. neglecta Wallr.…”

Section: Introductionmentioning

confidence: 99%

“…In medicine, mallow species are used in the treatment of respiratory, urinary, and digestive problems as they have high bactericidal, antiulcerogenic, anti-inflammatory, hepatoprotective, and antidiabetic activities [16][17][18][19][20][21][22]. M. neglecta, M. parviflora, M. sylvestris, and M. verticillata L. are the most investigated species in the genus and at the same time the most used ones in the industry [9]. Moreover, some mallow species also have the capacity to accumulate heavy metals and are potentially used for phytoremediation [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Identification and Genetic Diversity Analysis of Edible and Medicinal Malva Species Using Flow Cytometry and ISSR Molecular Markers

Jędrzejczyk

Rewers

2020

Agronomy

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The Malva genus contains species that reveal therapeutic properties and are mostly important in medicine and the functional food industry. Its breeding, cultivation, and utilization are based on proper germplasm/plant identification, which is difficult using morphological features. For this reason, we applied flow cytometry and inter simple sequence repeat polymerase chain reaction (ISSR-PCR) for fast and accurate species identification. Genome size estimation by flow cytometry was proposed as the first-choice method for quick accession screening. Out of the 12 tested accessions, it was possible to identify six genotypes based on genome size estimation, whereas all species and varieties were identified using ISSR markers. Flow cytometric analyses revealed that Malva species possessed very small (1.45–2.77 pg/2C), small (2.81–3.80 pg/2C), and intermediate (11.06 pg/2C) genomes, but the majority of accessions possessed very small genomes. Additionally, this is the first report on genome size assessment for eight of the accessions. The relationships between the investigated accessions showed the presence of two clusters representing malvoid and lavateroid group of species. Flow cytometry and ISSR molecular markers can be effectively used in the identification and genetic characterization of Malva species.

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Malva: Food, Medicine and Chemistry

Cited by 12 publications

References 130 publications

Malva parviflora Leaves Mucilage: An Eco-Friendly and Sustainable Biopolymer with Antioxidant Properties

Malva parviflora Leaves Mucilage: An Eco-Friendly and Sustainable Biopolymer with Antioxidant Properties

Phytomanagement of a Trace Element-Contaminated Site to Produce a Natural Dye: First Screening of an Emerging Biomass Valorization Chain

Identification and Genetic Diversity Analysis of Edible and Medicinal Malva Species Using Flow Cytometry and ISSR Molecular Markers

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