Comparison of combustion and Kjeldahl methods for determination of nitrogen in oilseeds

Daun, J. K.; DeClercq, D. R.

doi:10.1007/bf02675898

Cited by 36 publications

(24 citation statements)

References 3 publications

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“…They were then rinsed with distilled water to remove any traces of potassium permanganate. About 20 g of seeds were soaked in 60 ml distilled water for 4 h. Then, the excess water was drained, sample further rinsed with distilled water, seeds placed in a single layer on filter paper in sterile petridishes and placed in the Seed Germinator (Indosaw India) at the 25°C, 90% RH for 72 h. as per the method of Agrahar-Murugkar and Jha (2009) Daun and DeClercq (1994).…”

Section: Methodsmentioning

confidence: 99%

Influence of storage and packaging conditions on the quality of soy flour from sprouted soybean

Agrahar-Murugkar

Jha

2011

J Food Sci Technol

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Full fat soy (Glycine max L) flour (FFSF) from germinated 'MAUS 47' variety was packed in Al foil laminated paper (75 microns Al foil), low density polyethylene (LDPE, 125 microns), biaxially oriented polypropylene (BOPP, 100 microns) packets and polyethylene tetraphthalate (PET) jars and stored in ambient (25-35°C, 45-55%RH) and accelerated conditions (40°C, 90% RH) and tested every 15 days for a period of 75 days for changes in moisture, protein, fat, free fatty acid and nitrogen solubility. Increase in contents of moisture and free fatty acid with corresponding decrease in fat and solubility were observed in all stored packs more under accelerated conditions as compared to ambient conditions of storage. Among packaging materials FFSF from sprouted soybean was best kept in Al foil laminated packages followed by LDPE and BOPP packaging materials. Flour from sprouted soybean could be kept safely for 90 days in ambient and 75 days in accelerated conditions.

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Section: Methodsmentioning

confidence: 99%

Influence of storage and packaging conditions on the quality of soy flour from sprouted soybean

Agrahar-Murugkar

Jha

2011

J Food Sci Technol

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“…Needles were dried at 60 8C to constant weight and then milled to pass a 40 mesh screen. Foliar nitrogen and carbon concentrations were then determined for each tree by analyzing duplicate aliquots (10 mg) of the foliage samples with a Carlo Erba Series II C:H:N analyzer Model NA1500 (Carlo Erba Elantech, Lakewood, NJ) (Daun and DeClerq, 1994).…”

Section: Methodsmentioning

confidence: 99%

Effects of fertilization on red pine defense chemistry and resistance to Sphaeropsis sapinea

Blodgett

Herms

Bonello

2005

Forest Ecology and Management

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“…Foliar nitrogen concentration was determined for each plant by analyzing duplicate aliquots (10 mg) of the foliage samples described above with a Carbo Erba CNH analyzer, model NA 1500 (Daun and DeClerq 1994). Foliar nitrogen concentration was expressed on both a dry mass (mg/g) and leaf area (mg/cm 2 ) basis.…”

Section: Methodsmentioning

confidence: 99%

Effects of nutrient availability on biomass allocation as well as constitutive and rapid induced herbivore resistance in poplar

Glynn¹,

Herms²,

Egawa³

et al. 2003

Oikos

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Many studies have examined effects of nutrient availability on constitutive herbivore resistance of plants, but few have addressed effects on expression of rapid induced resistance (RIR). We quantified effects of two levels of nutrient availability on growth, biomass allocation, photosynthesis, and constitutive secondary metabolism of black poplar (Populus nigra). We also examined effects of nutrient availability on expression of constitutive resistance of poplar to gypsy moth (Lymantria dispar) and whitemarked tussock moth (Orgyia leucostigma), as well as RIR to both folivores in response to localized herbivory by gypsy moth. The high nutrient treatment had no effect on photosynthetic rate of poplar, but dramatically increased relative growth rate, total biomass, and total leaf area, while foliar phenolic concentrations and root:shoot ratio decreased. Plant growth was negatively correlated with foliar phenolic concentrations, which is consistent with predictions of the Growth/Differentiation Balance Hypothesis when increased nutrient availability increases growth without affecting photosynthesis. These responses of root:shoot ratio and constitutive secondary metabolism to nutrient availability are consistent with those proposed by models of adaptive phenotypic plasticity in resource allocation patterns. Nutrient availability affected constitutive resistance of poplar to first and fifth instar gypsy moth larvae, which grew much faster on high fertility plants. However, nutrient availability had no effect on constitutive resistance to whitemarked tussock moth. Localized herbivory elicited systemic RIR in poplar within 72 hours. However, the magnitude of RIR was dependent on nutrient availability, with differing effects on the two insect species. Expression of RIR to gypsy moth was most dramatic in the high fertility treatment. In contrast, RIR to whitemarked tussock moth was expressed only in the low fertility treatment. The idiosyncratic nature of effects of nutrient availability on constitutive and induced resistance challenges the value of using insect bioassays as surrogate measures of secondary metabolism for testing allocation models of plant defense, as well as the value of generalized plant defense models for predicting effects of environmental variation on resistance to specific herbivores. These results also suggest that the effects of nutrient availability on the expression of RIR may represent a largely over‐looked source of variation in plant/herbivore interactions.

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Comparison of combustion and Kjeldahl methods for determination of nitrogen in oilseeds

Cited by 36 publications

References 3 publications

Influence of storage and packaging conditions on the quality of soy flour from sprouted soybean

Influence of storage and packaging conditions on the quality of soy flour from sprouted soybean

Effects of fertilization on red pine defense chemistry and resistance to Sphaeropsis sapinea

Effects of nutrient availability on biomass allocation as well as constitutive and rapid induced herbivore resistance in poplar

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