Quantification and In Vitro Bioaccessibility of Selenium from Osborne Fractions of Selenium‐Rich Cereal Grains     

Noorpreet I. Dhanjal  Siddharth Sharma  N. Tejo Prakash 《Cereal Chemistry》2016,93(4):339-343

Cereal crops cultivated in the seleniferous belt of Punjab, India, were observed to hyperaccumulate a significantly high concentration of selenium (20–123 µg/g). Selenium concentration (µg/g) in storage proteins of wheat, maize, and rice, namely, albumin (401, 280, and 29, respectively), globulin (264, 192, and 242, respectively), glutelin (563, 359, and 178, respectively), and prolamin (629, 339, and 257, respectively) indicated variable selenium levels, with prolamin contributing significantly higher levels of selenium when compared with other proteins with reference to the total concentration of the protein fraction. The simulated gastric and gastrointestinal digestion studies indicated better accessibility of selenium during intestinal digestion, with variability across proteins and cereal types. The observations provide an insight into the bioavailability of selenium in selenium‐rich cereal grains, used in the study, and their potential use as source for selenium supplementation to deficient populations, or as “bioactive” selenium‐rich nutraceutical blends for health benefits.  相似文献   

Molecular evidence for bamboo as a new natural host of Cherry necrotic rusty mottle virus          下载免费PDF全文

P. Awasthi  R. Ram  O. Prakash  A. Sood  V. Hallan 《Forest Pathology》2015,45(1):42-50

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Amino acid profile of winged bean (Psophocarpus tetragonolobus (L.) DC): a rich source of vegetable protein     

Dhan Prakash  P. N. Misra  P. S. Misra 《Plant foods for human nutrition (Dordrecht, Netherlands)》1987,37(3):261-264

Twenty one cultivars of winged bean (17 of Indian origin and 4 exotic strains obtained from Sri Lanka) were cultivated on marginal (alkaline) soils in the sub-tropics and evaluated for their food value. Whereas the seeds showed wide variations in total protein content (38.1 to 45 per cent), the amino acid compositions were in close proximity to those of soybean. Nevertheless, some strains of winged bean registered higher levels of certain amino acids as compared to soybean.  相似文献   

Policosanol content and composition in perilla seeds     

Adhikari P  Hwang KT  Park JN  Kim CK 《Journal of agricultural and food chemistry》2006,54(15):5359-5362

Policosanols, long-chain alcohols, have many beneficial physiological activities. Contents and compositions in perilla seeds (Perilla frutescens) produced in Korea and China were determined. Waxy materials were extracted from perilla seeds using hot hexane. Yield of the waxy materials from perilla seeds was 72.1 mg/100 g of dry weight. Contents and compositions of the waxy materials and policosanols were identified and quantified by TLC, HPLC, and GC. Major components of the waxy materials from Korean and Chinese perilla seeds were policosanols (25.5 and 34.8%, respectively), hydrocarbons (18.8 and 10.5%), wax esters, steryl esters and aldehydes (53.0 and 49.8%), acids (1.7 and 2.1%), and triacylglycerols (1.0 and 2.9%), determined by HPLC. For comparison, waxy materials of sesame seeds were also analyzed. Yield of the waxy materials from sesame seeds were 8.6 mg/100 g. Less than 5% policosanols were detected in the waxy materials extracted from sesame seeds produced in Korea and China. Wax esters or steryl esters accounted for 93-95% of the sesame waxy materials. Policosanols in the perilla seeds were composed of 67-68% octacosanol, 16-17% hexacosanol, 6-9% triacontanol, and others.  相似文献   

Improving fertilizer recommendations for Nepalese farmers with the help of soil-testing mobile van     

Sunil Pandey  Netra Prasad Bhatta  Prakash Paudel  Rajan Pariyar  Kiran Hari Maskey  Janardan Khadka 《Journal of Crop Improvement》2018,32(1):19-32

Smallholder farmers dominate agriculture in Nepal. These farmers have poor knowledge about agriculture and lack of support for soil management and integrated plant-nutrient systems. Focusing on the importance and need for soil-fertility management, a soil-testing mobile van program has recently been introduced in Nepal by Soil Management Directorate, Hariharbhawan. With the introduction of the mobile lab, famers can get their soil tested for nutrient deficiencies and fertilizer requirements at their doorsteps. Using mobile lab, spatial distributions of chemical properties, including pH, organic matter (OM), total nitrogen (N), available phosphorus (as P₂O₅), and available potassium (as K₂O) were examined in soil samples taken from the 0 to 15 cm depth from selected agricultural fields in eight different districts in the mid-hills and Terai regions of Nepal. Tests conducted on 1,479 soil samples in the soil-testing mobile van revealed the following: the mean soil OM ranged from 0.01 to 1.77%; total N content ranged from 0.01 to 0.08%; mean available P₂O₅ ranged from 16.47 to 197.82 kg ha^?1; and mean available K₂O ranged from 84.3 to 422.57 kg ha^?1. For each crop to be grown, farmers were provided with individual soil health reports and fertilizer recommendations (rate, amount, and type). This program not only allows scientists and farmers to work closely and share information but also serves as a model for the nation to successfully transfer technology for improving soil health and sustainability.  相似文献   

Response of baby corn genotypes to soil and foliar nitrogen application schedule     

Madhav Prasad Neupane  Shiv Prakash Singh  Sai Sravan Uppu 《Archives of Agronomy and Soil Science》2017,63(13):1912-1926

Responsive genotypes, timing and mode of nitrogen application are important for realizing potential yield of winter baby corn. Soil application of nitrogen is a common practice. Foliar application enhances absorption and utilization of nitrogen particularly after anthesis. We investigated combined approach in management of nitrogen for the first time including soil applications followed by foliar urea spray to enhance baby corn yield and profitability. To determine these, 2-year study conducted with three genotypes and six schedules of recommended dose of nitrogen (RDN). Growth characters, productivity traits, harvest period and yields recorded. Nitrogen content and uptake, protein content and harvest were determined. Genotype HM-4 produced 4.6% and 4.1% more cobs and corn weight over HQPM-1. Combined approach resulted higher yield attributes, yields, N uptake, protein harvest and monetary returns. RDN in 4 splits with more basal (B) dose increased cob and corn yield by 4.8% and 5.1% than 3 splits (50% B). Results suggest that HM-4 be grown using RDN 50% as B, 25% at knee height stage, 20% at tassel emergence followed by 5% foliar spray after first picking as urea solution (3%) for achieving higher yield and net returns. More studies needed under diverse conditions.  相似文献