Hazelnut (Corylus avellna L.) is one of the important nut crops in world. The harvesting ofhazelnuts is done either by hand or by manual or mechanical raking of fallen nuts in Iran.Common hazel is widely cultivated for its nuts, including in commercial orchards in Europe,Turkey, and Iran. There are some genotypes of hazelnut in Iran that their growing areas arelimited to Gillan, Aredbil, Mazand...

Mitochondrial RNA polymerase activity from rat liver has previously been demonstrated in intact organelles. This activity has now been solubilized, partially purified, and shown to be a true polymerase, free of nuclease. The enzyme is derived from mitochondria and is not from contaminating bacteria or nuclear components. The enzyme is distinguished from its nuclear counterparts by its behavior ...

The effects of two diets, a control diet (commercial feed with 39% crude protein) and an experimental diet (prepared based on 42% soybean meal with 38% crude protein), on growth performance of western white shrimp (Litopenaeus vannamei) in six 0.4-ha-earthen ponds (three replications per treatment) with 25 per m2 density, were investigated. There was no significant difference in final weight (m...

milk clotting enzyme (m ce) produced by: rhizomucor miehei was purified and characterized.the enzyme was purified 220.29-fold with specific activity about 14444.2 u/mg protein byultrafiltration, ammonium sulfate fractionation, sephacryl s-300 chromatography. the maximumenzyme activity was at 65°c.the milk clotting activity was decreased steadily as ph is increased and indicated maximumactivity ...

Mixed micelles of (32)P-labeled phosphatidylcholine or phosphatidic acid (PA) and the nonionic detergent octylphenol polyethylene oxide (NP-40 Nonidet) were used to assay the activities of phospholipase D and PA phosphatase in crude extracts of mung bean (Vigna radiata) cotyledons. Together these enzymes degrade phosphatidylcholine to free choline, inorganic phosphate, and sn-1,2-diacylglycerol...

BACKGROUND Species of Cephalotaxus (the plum yews) produce nematotoxic compounds of unknown identity. Consequently, bioassay-guided fractionation was employed to identify the compound(s) in Cephalotaxus fortunei twigs and leaves with activity against plant-parasitic nematodes. RESULTS A crude alkaloid extract, particularly drupacine, was responsible for much of the nematotoxicity. The ED50 of...

N'-methoxy phenylurea herbicides are degraded by induced cells of Bacillus sphaericus ATCC 12123 by liberating carbon dioxide from the ureido portion of the molecule and leaving the corresponding aniline moieties. Cell-free extracts of B. sphaericus inactivate these herbicides in the same way as reported for whole cells. A 6.6-fold purification of the crude extract was achieved by a combination...