Abstract. Fatmawati U, Qurrata’aini MR, Rosyidi NW, Sari DP, Santosa S. 2023. Optimization of culture medium and bioformulation rhizobial actinomycetes to enhance soybean plant growth. Biodiversitas 24: 2912-2918. Actinomycetes are a group Gram-positive bacteria that well-known for having growth-promoting activity. In an earlier study, Streptomyces sp. strain ASR 58 67, isolated from rhizospher...

Discriminating against arsenate: Determination of the structure of periplasmic phosphate binding proteins at very high resolution provides the basis for understanding the high discrimination of bacteria against arsenate. The results complete our insight into earlier erroneous conclusions on the ability of certain bacteria to use arsenate instead of phosphate.

METHODS A 2.8M phosphate buffer is prepared by dissolving 21.7 Gm. dibasic potassium phosphate (K2HPO4) and 16.9 Gm. monobasic potassium phosphate (KH2PO4) in distilled water free of CO2. The volume is adjusted to 100 ml. To 1.8 ml. of this buffer, 20 mg. of sodium hydrosulfite (Na2S2O4) and 0.2 ml. of buffered hemolysate (3) are added in a small test tube. After 15 minutes or longer the mixtur...

Purpose of current research work was to develop mouth dissolving tablets of Loperamide HCl with enhanced solubility and palatable taste. Mouth dissolving tablets of Loperamide HCl were prepared by the directcompression method. Skimmed milk was used as natural polymer. Improvement in dissolution rate of drug was observed in solid dispersion as compared to pure drug. All the batches of the tablet...

introduction: in iran, tuberose is ranked the forth after gladiolus, rose and carnation. these flowers are known as high quality products among which maximum exportation belongs to tuberose and gladiolus. in plant cultivation and development, adequate provision of nutrients is of crucial importance. tuberose needs plenty of nutrients to obtain the desirable quality and flowering. hence, tuberos...

Results of in situ atomic force microscopy (AFM), ex situ AFM, optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, and x-ray diffraction were combined with previous macroscopic investigations to characterize aqueous Pb(NO3)2 reaction with hydroxylapatite (Ca5(PO4)3OH) (HAP). Experiments were conducted by immersing particulate HAP crystals in the AFM fluid cell in s...

biofertilizer is a substance which contains living microorganisms which can use instead of chemical fertilizer in sustainable crop production. the effects of phosphate solubilizing bacteria; root endophytic fungi (ef) piriformospora indica, and arbuscular mycorrhizal fungus (amf) glomus mosseae on growth and nutrient uptake of sunflower plants grown in mixture with two clover species, persian c...

In the present study, novel co-processed superdisintegrants were developed by solvent evaporation method using crospovidone and croscarmellose sodium in the different ratios (1:1, 1:2 & 1:3) for use in the fast dissolving tablet formulations. The developed excipients were evaluated for angle of repose, Carr’s index and Hausner’s ratio in comparison with physical mixture of superdisintegrants. T...