This experiment was carried out during the two growing seasons 2012/2013 and 2013/2014 at the experimental farm of Unit for Strawberry and Non Traditional Horticulture Crops, Horticulture Department, Faculty of Agriculture, Ain Shams University, Egypt, in order to investigate the effect of magnetic field on germination of true potato seeds (TPS), vegetative growth and potato tubers characterist...

Adenine nucleotides are of general importance for many aspects of cell function, but their role in the regulation of biosynthetic processes is still unclear. It was previously reported that decreased expression of plastidial adenylate kinase, catalysing the interconversion of ATP and AMP to ADP, leads to increased adenylate pools and starch content in transgenic potato tubers. However, the unde...

ONSIDERABLE EVIDENCE IS now available indicating that normal adult hemoglobin (hemoglobin A) is heterogeneous. Sharp and well-defined fractions of hemoglobin A, designated A2 and A3, were obtained by Kunkel (11), who used insoluble potato starch as a supporting medium for electrophoresis. Kunkel also was the first to measure quantitatively the amount of hemoglobin A2 and to correlate increases ...

ADP-glucose pyrophosphorylase (AGPase) catalyzes the rate-limiting step in starch biosynthesis in plants and changes in its catalytic and/or allosteric properties can lead to increased starch production. Recently, a maize (Zea mays)/potato (Solanum tuberosum) small subunit mosaic, MP [Mos(1-198)], containing the first 198 amino acids of the small subunit of the maize endosperm enzyme and the la...

It is suggested that a stable confoTmation of each complex was not formed during the gelatinization of the starch granu]es, but during cooling from a temperature higher than the dissociation temperature of the complex -'hich had formed during the gelatinization process. by differential scanning calorirnetry. Fairly high purity SE have reeently become available, whose position of esterification ...

A protein, starch phosphorylase inhibitor, was purified from the root of sweet potato (Ipomoea batatas [L.] Lam. cv Tainon 65). It had a molecular weight of 250,000 and could be composed of five identical subunits. The isoelectric point of the inhibitor was 4.63. It was a noncompetitive inhibitor toward the sweet potato enzyme with a K(i) value of 1.3 x 10(-6) molar when glucose-1-P was the var...

Osmotically permeabilized potato (Solanum tuberosum L.) tuber slices were used to study the biosynthesis of starch under semi in vivo conditions. Criteria to distinguish the various enzymes involved in starch biosynthesis were developed based on the characteristics of the enzymes in in vitro experiments. Branching enzyme activity was inhibited at pH 8.5 or higher, while the starch synthases fun...

The present study was undertaken to evaluate the effects of three different fillers i.e. rice flour, tapioca starch and potato starch, on the physico-chemical and sensory attributes of chicken meat caruncles, so as to find the best filler for chicken snacks. Four different batches were prepared as follows control (35% refined wheat flour), T-1 (22.75% refined wheat flour + 12.25% rice flour), T...

Verticillium wilt of potato is a major limiting factor in potato production caused by Verticillium dahliae. The objective of this study was to evaluate the efficacy two elicitors including Acibenzolar-S-methyl (ASM) and Chitosan as plant activator in controlling of potato verticillium wilt in vitro and greenhouse conditions. ASM and chitosan were tested in vitro using Potato dextrose Agar (PDA)...

The non-enzymatic browning (NEB) reaction plays an essential role in food acceptance and quality. There has been increased interest in revealing the role that water plays in native and gelatinized starch. However there is a lack of information on the relationship between the water dynamics of water–starch interactions and the kinetics of NEB reaction in native and gelatinized starch systems. Th...