A newly designed sticker-plastic sheet platform and smartphone-based digital imaging for protein assay in food samples with downscaling Kjeldahl digestion
Pirom Didpinrum, Watsaka Siriangkhawut, Kraingkrai Ponhong, Piyanete Chantiratikul, Kate Grudpan
Abstract
, respectively. The repeatability and reproducibility were 6.7% and 8.8%, respectively. The accuracy of the proposed method was evaluated by applying the developed procedure for milk powder and feeding stuff reference materials and comparing it with the conventional Kjeldahl method. The proposed method was successfully applied for the determination of protein contents in soy foods and protein-based foods. The results agreed well with those obtained from the conventional Kjeldahl method.
Topics & Concepts
Kjeldahl methodDigestion (alchemy)ChemistryEnvironmental scienceChromatographyOrganic chemistryNitrogenBiosensors and Analytical DetectionIdentification and Quantification in FoodInnovative Microfluidic and Catalytic Techniques Innovation