Showing papers on "Maranta published in 2015"
TL;DR: In this paper, a power law model was used to characterize the maranta starch, and the results showed that the starch granules had spherical and elongated geometries with average size of 56.60 μm.
Abstract: Maranta (Maranta arundinacea L.) can be considered as a non-conventional raw material for starch. The objective of this work was to characterize the maranta starch. These starch granules had spherical and elongated geometries with average size of 56.60 μm. The maranta starch presented B-type crystal, revealed by x-ray spectra, and gelatinization temperature of 65.5°C as determined by thermal (differential scanning calorimetry) analysis. Maranta starch suspensions have a pseudoplastic behavior which was well described using a power law model. Storage and loss moduli increased drastically during gelatinization process, corroborating with differential scanning calorimetry results. In general, maranta starch could have numerous applications in the food industry.
25 citations
01 Jan 2015
TL;DR: The results showed that the media of Canna edulis, Dioscorea esculenta, and Maranta arundinaceae can be used as an alternatives media for bacterial growth and the most optimal media is Dios Corea Esculenta.
Abstract: The high cost of instant media such as nutrient agar encourage researchers to find an alternative media from raw materials that are easily available and cheap. This study aims to determine of using a source of carbohydrates to used as an alternative media. The source of carbohydrates that can be used is Canna edulis, Dioscorea esculenta, and Maranta arundinaceae and the results were compared with nutrient agar. The sample used are 300 gr of tubers with addition 10 gr of sugar and 15 gr of agar in 1000 ml of destilled water. This study used a Completely Randomized Design (CRD) two factors. The first factor is a type of bacteria: Escherichia coli and Staphylococcus aureus and the second factor is the types of alternative media: Canna edulis, Dioscorea esculenta, and Maranta arundinaceae. The bacteria were inoculated with a spread plate method and incubated at 37 ° C for 24 hours. the parameters are a number of population and the size of the bacterial colonies.The result showed that in Escherichia coli, the highest population is in the Canna edulis (7.56x10 7 CFU/ml), Dioscorea esculenta (6,86x10 7 CFU/ml), nutrient agar media (6.21x10 7 CFU/ml), and the last is Maranta arundinaceae (5.49x10 7 CFU/ml) while in the the Staphylococcus aureus, the highest population is in the Canna edulis (8.17x10 7 CFU/ml), Maranta arundinaceae (5.13x10 7 CFU/ml), Dioscorea esculenta (4.08x10 7 CFU/ml), and the last is nutrient agar media (4.02x10 7 CFU/ml). Based on the size of the bacteria, the best result is in the Dioscorea esculenta, because the bacterial colonies are large and looks more clear. The results showed that the media of Canna edulis, Dioscorea esculenta, and Maranta arundinaceae can be used as an alternatives media for bacterial growth and the most optimal media is Dioscorea esculenta.
18 Nov 2015
01 Jan 2015
TL;DR: It can be inferred that the parts of plant having high content of phytochemicals may serve as a good source of nutraceuticals which have potential for use in health care formulations.
Abstract: The present study was carried out to determine the phytochemical constituents, antioxidant activity and antimicrobial activity in the Azadirachta indica, Ocimum tenuiflorum, Momordica charantia, Momordica dioica, Costus igneus, Calathea zebrine, Maranta leucoreura and Ophiopogon japonicus medicinal plants. Out of eight plant samples tested, leaf extract of Maranta leucoreura showed highest total antioxidant capacity with 2440µg α-tocopherol content per milligram of the plant extract. Also reducing power activity in Costus igneus was found to be 85mg/ml and Calathea zebrine with 83mg/ml respectively. The antimicrobial potential of eight plants was screened against four bacteria E. coli, S. aureus, P. vulgaris and Streptococci sp, using well diffusion assay. Methanol extracts of Azadirachta indica, Ocimum tenuiflorum, Momordica charantia, Momordica dioica, Costus igneus, Calathea zebrine, Maranta leucoreura and Ophiopogon japonicus exhibited good activity against all the bacteria tested. The methanol leaf extracts of Momordica charantia showed significant activity against S. aureus (40mm), Streptococci sp (32mm) and E.coli (35mm). Leaf extract of Ocimum tenuiflorum exhibit highest activity against P. vulgaris (30mm) and E.coli (34mm). It can be inferred that the parts of plant having high content of phytochemicals may serve as a good source of nutraceuticals which have potential for use in health care formulations.