objective: sweet potato whitefly, bemisia tabaci gen. (b. tabaci), is one of the most important pests of various greenhouse crops in iran. nowadays, chemical insecticides are broadly used for control of the pests that causes risk to consumer's health. for the first time, contact toxicity of pelargonium roseum andrews and artemisia sieberi besser essential oils on b. tabaci and its possible...

Acrylamide is a by-product of the Maillard reaction and is potentially carcinogenic to humans. It is found in a number of foods with higher concentrations in carbohydrate-rich foods and moderate levels of protein-rich foods such as meat, fish and seafood. Acrylamide levels in food distributed in vending machines placed in public areas of the city of Perugia were analysed by high-performance liq...

objective: potato is the fourth important food crop after wheat, rice and maize. shrinkage  of  food  materials  has  a negative  consequence  on  the  quality  of  the dehydrated product. the main objective pursued in this paper is to investigate the shrinkage amount of potato slices during drying process using vacuum-infrared method. methods: in this work, the effect of the infrared radiation...

BACKGROUND Orange-fleshed sweet potato is an efficacious source of vitamin A. Substituting wheat flour with orange-fleshed sweet potato in processed products could reduce foreign exchange outlays, create new markets for producers, and result in increased vitamin A consumption among consumers provided there is adequate retention of beta-carotene during processing. OBJECTIVE To explore whether ...

DAHP2 synthase (EC 4.1.2.15) is the first enzyme of the shikimate pathway that leads to the biosynthesis of the aromatic amino acids and derived secondary metabolites. The enzyme is induced by glyphosate (6), wounding (1, 4), and fungal elicitor (4, 5). Previously, a cDNA encoding DAHP synthase, which we call shkA, was cloned and sequenced from potato cells grown in suspension culture (2); that...

potato image segmentation is an important part of image-based potato defect detection. this paper presents a robust potato color image segmentation through a combination of a fuzzy rule based system, an image thresholding based on genetic algorithm (ga) optimization and morphological operators. the proposed potato color image segmentation is robust against variation of background, distance and ...

Sweet potato is grown extensively from tropical to temperate regions and is an important food crop worldwide. In this study, we established detection methods for 17 major sweet potato viruses using single and multiplex RT-PCR assays. To investigate the current incidence of viral diseases, we collected 154 samples of various sweet potato cultivars showing virus-like symptoms from 40 fields in 10...

Egypt like many developing countries is shifting towards a free market oriented economy. Egypt’s economic strategy strives to expand and develop exports, especially agricultural exports, and at the same time provide food to Egyptian consumers However, the improvement, on the macro-economic level, was not reflected, as expected, on the agricultural sector. The potato sector has variability in pr...