Sathishkumar P.,University of Technology Malaysia |
Hemalatha S.,Periyar University |
Arulkumar M.,Periyar University |
Ravikumar R.,Forest College and Research Institute |
And 3 more authors.
Journal of Food Biochemistry | Year: 2015
Curcuminoids are nutraceutical compounds used worldwide for medicine as well as in food preparations. In the present study, curcuminoid extraction was optimized using response surface methodology. The antimicrobial properties of curcuminoids and bromine-modified curcuminoids (BMCs) were determined against food spoilage flora and foodborne pathogens. The maximum curcuminoid yield was obtained when turmeric, methanol and time were 5.77g, 22.52mL and 12.53h, respectively. The high-performance liquid chromatogram of the extracted curcuminoids indicated three peaks at 9.5, 10.1 and 10.7min, which correspond to bisdemethoxycurcumin, demethoxycurcumin and curcumin in the ratio of 28:24:48, respectively. Curcuminoids had a broad spectrum of antimicrobial activity. The minimum inhibitory concentration value of BMCs was significantly decreased to 34.5, 14.7 and 30.2% for the tested gram-positive bacteria, gram-negative bacteria and fungi, respectively. Practical Applications: This finding suggests that bromine-modified curcuminoids would be a good candidate for food manufacturing industries to control food spoilage flora and foodborne pathogens. © 2015 Wiley Periodicals, Inc.
Prabaharan K.,Forest College and Research Institute |
Nandhagopalan A.,Forest College and Research Institute |
Sudarshan A.,Forest College and Research Institute
Indian Journal of Ecology | Year: 2015
A field experiment was conducted to study the effect of different levels of NPK on the nutrient uptake pattem and biomass yield in Melia dubia. Higher content and uptake of N,P and Kin plant were markedly influenced by the application of 250:150:150 g N,P & K plant-1. The LAI was higher at 2,4 & 6 months after planting (0.61,1.33 & 2.40, respectively) due to influence of 250:75:150 g NPK plant-1. The leaf area duration was higher due to application of 250:150:150 g NPK plant-1and registered 59.02 days, followed by 250:75:150 g NPK plant-1 with a value 58.06 days. The biomass yield was also altered by different levels of N, P and K and it was significantly influenced due to application of 250:150:150 g NPK plant-1 followed 250:75:150 g NPK plant-1.
Reddy S.A.,Forest College and Research Institute |
Goroji P.T.,Forest College and Research Institute |
Ravalan B.M.,Forest College and Research Institute
Soil and Environment | Year: 2014
Intensively cultivated soils are being depleted of available nutrients. Therefore, soil fertility status needs to be assessed to increase the productivity of perennial tree species. Hence the assessment of soil fertility status was carried out to know the macronutrient status of soils under Ceiba pentandra plantations. One hundred and six (106) surface (0-15 cm) and subsurface (15-30 cm) soil samples were drawn from the kapok plantations by using GPS technique. The soil samples were analysed for pH, ECe, organic matter, available nitrogen (N), phosphorous (P) and potassium (K) and the results were categorised into low, medium and high. The study revealed that surface soil samples of Theni district were acidic to neutral in pH. Bodinayakanur and Myladumparai blocks showed higher nutrient status as compared to all other blocks; may be due to the age of the plantation. In all the eight blocks, available nitrogen was low to medium even under plantation. In order to enhance the nitrogen status of the soil, sustained application of organic manures or supplementation through inorganic fertilizers is recommended. Organic carbon decreased significantly with successive increase in soil depth. The available macronutrient status was higher under plantation than agricultural crop land. © 2014, Soil Science Society of Pakistan.
Sudarshan A.,Forest College and Research Institute |
Praveen T.G.,Forest College and Research Institute |
Lokesh S.L.,Forest College and Research Institute |
Backiyavathy M.R.,Forest College and Research Institute
Ecology, Environment and Conservation | Year: 2014
Kapok (Ceiba pentandra) is the most important agroforestry tree species and it occupies major area under plantations in Theni district of Tamil Nadu. In addition its value for silk cotton, it also plays an important role in storing carbon. To assess the carbon sequestration potential, the study has been carried out to estimate the carbon storage in different tree parts of Ceiba pentandra at different age groups. Carbon sequestration potential was estimated through destructive felling method. Oven dried biomass samples were ground in a Wiley Mill and carbon content in different tree components was estimated by ash method. There was slight variation in carbon content between age groups and considerable difference between various parts of the tree. The wood contained around 44.7 per cent, leaves around 36.4 per cent, branches around 41.5 per cent and the roots around 42.5 per cent of carbon.lt was found that 38.7 ton carbon per hectare is stored by a 12 years old kapok plantation. AGRES software was used to compute the results. Copyright © EM International.