Showing papers on "Maranta published in 2014"
01 Jan 2014
TL;DR: In this article, the authors used a power law model to characterize the Maranta starch and found that the starch granules had spherical and elongated geometries with average size of 56.6μm and gelatinization temperature of 65.5°C.
Abstract: Maranta (Maranta arundinacea L) can be considered as a non-conventional raw material for starch. Thus, the objective of this work was the characterization of the Maranta starch. These starch granules had spherical and elongated geometries with average size of 56.6μm. The Maranta starch presented B-type crystal, revealed by x-ray spectra, and gelatinization temperature of 65.5°C, determined by DSC analysis. Maranta starch suspensions have a pseudoplastic behavior which was well described using a power law model. And, storage and loss moduli increased drastically during gelatinization process, corroborating with DSC results. In general, maranta starch could have numerous food industrial applications.
3 citations
TL;DR: In this article, the proximate composition, glycemic indices (GIs), and physicochemical properties of starch of boiled tubers of Dioscorea alata (violet and white), Maranta arundinacea, and Canna indica with the intention of recommending these for consumption or utilization as an ingredient in food preparation.
Abstract: The present study was conducted to determine the proximate composition, glycemic indices (GIs), and some physicochemical properties of starch of boiled tubers of Dioscorea alata (violet and white), Maranta arundinacea, and Canna indica with the intention of recommending these for consumption or utilization as an ingredient in food preparation. Proximate compositions of cooked tubers were determined according to standard methods. GIs were determined according to FAO/WHO guidelines with bread as the standard. The size and shape of the starch granules and the carbohydrate molecular size distribution were studied to correlate their effects to individual GIs. Digestible carbohydrate ranged from 59.0 to 69.1 g/100 g dry weight (DW) and was not significantly (p > 0.05) different among the tubers. Crude protein content ranged from 4.5 to 9.2 g/100 g DW with Dioscorea (violet) and Maranta having the highest amounts, 9.2 and 8.6%, respectively. Fat contents were low (1.2–2.3 g/100 g DW). The contribution by insoluble and soluble fiber ranged from 7.0 to 11.0 and 4.0 to 6.0 g/100 g DW, respectively. Dioscorea tubers (violet and white) were categorized as low GI, with corresponding GI's of (±SEM) 64 ± 9 and 69 ± 4, respectively. Maranta was categorized as a medium GI (82 ± 8) and Canna as a high GI (110 ± 8) food. Microscopic studies and carbohydrate distribution patterns indicated cell enclosed starch granules in the two Dioscorea varieties, which have not been reported earlier. It is concluded that, low GI yams (Dioscorea white and violet) have a high potential to be utilized as a functional ingredient in food formulations targeting individuals who require glycemic control.
3 citations
01 Jan 2014
TL;DR: The present study was to analyse the occurrence of mycorrhizal diversity in 46 medicinal plants belonging to 25 families of Madayipara hills, Kannur, Kerala and to explore for structures correlated to possible functional position of the symbiosis.
Abstract: The present study was to analyse the occurrence of mycorrhizal diversity in 46 medicinal plants belonging to 25 families of Madayipara hills, Kannur, Kerala and to explore for structures correlated to possible functional position of the symbiosis. Arbuscular mycorrhizal fungal colonization ranged from 24–81%. The highest infection was found in Justicia gendarussa and lowest in Naregamia alata. AM fungal spore population with a range of 140 to 620 in100 g of rhizosphere soils was detected. The maximum spore population was observed in the species, Maranta arundinaceae (620/100g of soil) and the minimum in Achyranthes aspera (140/100g of soil). Totally 35 AM fungal species were isolated which belongs to four genera (Aculospora, Gigaspora, Glomus and Scutellospora) and among them Glomus was dominant genera. The soil pH was also determined.
1 citations
TL;DR: This species is herein transferred to Maranta, recognizing the wide morphological re-delimitation of this genus.
Abstract: Calathea subgenus Pseudophrynium series Polystachyae was proposed to accommodate a single species, Calathea polystachya . This species is herein transferred to Maranta , recognizing the wide morphological re-delimitation of this genus.
1 citations