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Articles by A.K. Pandey
Total Records ( 9 ) for A.K. Pandey
  Jaya Singh and A.K. Pandey
  Problem statement: The storage environment can have a drastic impact on the stabilization of microbial biopesticides. As a general rule, storing microbial preparation at lower temperature increase long term survivelity. Approach: Optimization of shelf life is critically important for biocontrol products containing living microorganisms. Conidia of Colletotrichum dematium, (FGCC#20) a fungal pathogen of the weed, Parthenium hysterophorus were produced in solid agrowaste substrate. After solid based formulation, formulated mycoherbicidal products were conditioned at room temperature and at 4°C temp in different storage periods. Results: The longest shelf-life (conidial inoculums viability) was found in formulated products stored at 4°C temperature. At this temperature 4°C pesta (Wheat bran + Keolin) granules were 80% viable for 3 months and 10-15% viable after one month. Conclusion: The temperature had a renounced effect on the shelf life of the formulated products during storage. Maximum shelf life was observed in pesta granules for at least 1 year at 4°C would be adequate for commercialization.
  S.P. Gautam , P.S. Bundela , A.K. Pandey , R.K. Jain , P.R. Deo , S.K. Khare , M.K. Awasthi and Surendra Sarsaiya
  Problem statement: Rapid urbanization and population growth are largely responsible for very high increasing rate of solid waste in the urban areas, its proper management and recycling is major problems of Municipal Corporation. The proposed study attempted to proper management, physicochemical analysis of Urban Solid Waste (USW) and its conversion to enriched compost by ecofriendly process. Approach: For this study, we used turned windrows method for composting of USW, microbial inoculums added uniformly and temperature, pH, moisture maintained throughout the composting process. The chemical composition of compost obtained at the end of the composting process compare to the United State Environmental Protection Agency (USEPA) standards. Results: A study in Jabalpur had shown the 47% of Urban Solid Waste (USW) were degradable and 53% non-degradable. The initial compositions of urban waste were indicates an organic carbon status of 38% with the C: N ratio of 950. The additives used in solid urban waste composting such as cow dung and green manure recorded organic carbon content of 25.60 and 34.60 and C:N ratio of 30.11 and 11.23. Conclusion: The results of the study clearly indicate that the recycling of solid urban waste can transform garbage or municipal solid waste to enriched composts. This is practical significance if adopted by urban farmers as a result of soil health and in turn the productivity of soil can be maintained for further agriculture.
  A.K. Pandey , Vijayalakshmi Ojha and S.K. Choubey
  Apart from the diverse uses of bamboo, the tender shoots, being low in fat, high in dietary fiber and rich in mineral content (good source of potassium) have been consumed traditionally by the people. The shoots are consumed due to their exotic taste, flavour, medicinal and nutritive value. Bamboo shoots are available for a limited period and have a short shelf-life, thus, they need to be processed and utilized immediately after harvest. Therefore, a study was conducted to determine the nutritional value and develop value added edible products from different bamboo species viz., Dendrocalamus strictus, Bambusa bambos and Bambusa tulda, found in central India and Dendrocalamus asper (known edible bamboo species of Thailand) grown in central India. Nutritional analysis revealed that the nutritive value of D. strictus, B. bamboos and B. tulda is at par with D. asper. Thus, these species have a potential for edible shoot production in central India. Different value added products viz., nuggets (bari), pickle and papad (cracker) were made from fresh bamboo shoots. Organoleptic, sensory and chemical evaluation done at monthly intervals, to determine the shelf-life of product, revealed that the products were good in taste, texture and quality for 6 months from the date of processing at ambient conditions (25-40°C) in poly propylene and glass containers. Value addition (by making different edible products) will increase the utilization of bamboo shoots and provide livelihood opportunities to the local population. Present study will be useful in optimum utilization of bamboo shoots.
  R. Sharma , R.C. Rajak and A.K. Pandey
  The edible ectomycorrhizal Basidiomycetes are difficult to inoculate in field for reforestation of trees and mushroom production due to insufficient mycelial colonization of substrate. Edible mushroom in the genera Cantharellus was tested for mycorrhization with Dendrocalamus using house waste tealeaves+sand based inoculum under laboratory and green house conditions using polythene bags and plastic boxes. Mycorrhizal seedlings were acclimatized in open pot soil. Dense Cantharellus mycelia colonized the substrate in 2-3 weeks. Inoculum survived for atleast six months and retained its viability. Occasionally few bacterial contaminants were observed, which were discarded. The cost effective method developed in present investigation can be used for tailoring large-scale seedling/nursery plantlets and sustainable reforestation of various tree species.
  L.V. Singh , V. Tripathi , Rekha Sharma , A.K. Pandey , A. Maitra and B.P. Mishra
  The CAPN1 gene plays an important role in post mortem tenderization of meat and it is a main candidate gene for assessing the meat quality characteristics of beef. In this study, 59 nucleotide variations in different regions (exon 3, exon 4 and exon 11 and its flanking region) of CAPN1 gene were compared with Bos taurus. The fragment of exon 3 and their flanking region were sequenced and thirteen nucleotide changes in this region were identified. Ten variations and one deletion (1861{C}) were observed in the fragment (480 bp) of exon 4 and its up and downstream regions. On sequencing of exon 11 and its flanking region thirty variations and eight deletions at the position 175-182 (TCCTTCTG), one addition at the position 182-183 (G) were observed. The variations observed in this study can be used in further research for association between gene polymorphisms and goat meat quality traits.
  A.K. Pandey and Shashank Kumar
  Background: The use of plants for healing purposes predates recorded history and forms the origin of much of modern medicine. Many conventional drugs originated from plant sources. Since new and re-emerging infectious diseases are rising very rapidly, there is an urgent need to discover newer antimicrobial compounds having diverse chemical structures and novel mechanisms of action. The emergence of multiple drug resistant strains in human pathogenic organisms has further necessitated the search for new antimicrobial substances from natural sources including plants. This review deals with the phytomedicine usage, the emergence of resistance in the microorganisms, the chemistry and biological activity of the plant based antimicrobial compounds. Results: Medicinal plants have drawn the attention of the researchers worldwide and numerous publications have documented the therapeutic potential of phytochemicals to validate claims of their biological activity. Plants have limitless ability to synthesize aromatic substances, most of which are secondary metabolites including phenols, flavonoids, coumarins, alkaloids and terpenoids etc. These compounds serve as plant defense mechanisms against predation by herbivores, insects and microorganisms. Many plant products have ability to overcome resistance in organisms and thereby combat infectious diseases. This has led researchers to isolate active compounds, investigate their mechanisms of action and provide molecular mechanism of overcoming resistance in microorganisms. Antimicrobial agents are compounds capable of destroying or inhibiting micro-organisms even at low concentrations. They vary in their spectrum of activity and can be classified as antibacterial, antifungal or antiviral agents. Conclusion: Phytomedicines have shown great promise in the treatment of infectious diseases including opportunistic infections. The diversity of phytochemicals present in plants including secondary metabolites provide drug leads for the development of novel therapeutic antibacterial, antifungal and antiviral agents. The review also sheds light on the future development of combination therapy involving plant-derived agents which is indeed very promising.
  M. Singh , A.K. Pandey , R.J. Butcher and N.K. Singh
  Two novel Ni(II) complexes {[Ni(en)2(pot)2]0.5CHCl3} (3) {pot=5-phenyl-1,3,4-oxadiazole-2-thione} (1) and [Ni(en)2](3-pytol)2 (4) {3-pytol=5-(3-pyridyl)-1,3,4-oxadiazole-2-thiol} (2) have been synthesized using en as coligand. The metal complexes have been characterized by physical and analytical techniques and also by single crystal X-ray studies. The complexes 3 and 4 crystallize in monoclinic system with space group P21/a and P121/c, respectively. The complex 3 has a slightly distorted octahedral geometry with trans (pot) ligands while 4 has a square planar geometry around the centrosymmetric Ni(II) center with ionically linked trans (3-pytol) ligands. The π...π (face to face) interaction plays an important role along with hydrogen bondings to form supramolecular architecture in both complexes.
  A.K. Pandey and Rameshwar Das
  Medicinal plants play an important role in disease management and livelihoods of people worldwide. In recent years, the growing demand for medicinal plants has accelerated overexploitation of valuable resources by unscientific and destructive manner without considering sustainability and quality issues. As a consequence, the quality of both raw material and finished products has become important concern for herbal/pharmaceutical/nutraceutical/cosmeceutical industries and the public alike. Moreover, medicinal plant collectors are not getting remunerative value for their produce because of poor quality (due to wrong identification, immature collection, poor processing, inadequate storage, adulteration etc.). Good collection/harvesting practices of some important medicinal plants i.e., Aonla (Phyllanthus emblica), Baividang (Embelia tsjeriam-cottam), Baheda (Terminalia bellerica), Gudmar (Gymnema sylvestre), Sarpagandha (Rauvolfia serpentina) and Kalmegh (Andrographis paniculata) have been standardized for tropical climate of central India. The quality (active ingredients) of above plants was also evaluated. It is evident from our study that the medicinal plants harvested at right time of maturity following Good Field Collection Practices (GFCPs) possess better quality in terms of active ingredients concentration. Adoption of GFCPs and quality evaluation of medicinal plants will have positive impact on resource conservation, socio-economic status of community, quality of produce, economic returns and marketing. To achieve these, R and D institutions may act as nodal centers for quality evaluation and dissemination of GFCPs to the collector/growers of medicinal plants to augment utilization and get premium price of their produce.
  A.K. Pandey , H.K. Rai , B.K. Pandey , Abhay P. Srivastava and C.K. Singh
  To predict the most suitable EOS for the analysis of real compression behavior of carbon nanotube bundles, single carbon nanotubes and Graphite we have used Suzuki, Shanker, Tait and Murnaghan Equation of states. The analysis of computed results suggests that the Suzuki formulation is not capable of explaining the compression behavior of nanomaterials at higher pressure. Shanker formulation gives slightly better results of volume compression at different pressure than the Suzuki formulation but the results obtained by Tait’s and Murnaghan EOS are in good agreement to the experimental data for nanotube bundle and individual carbon nanotubes in the entire range of pressure. Surprisingly it is observed that only Murnaghan formulation gives the better agreement with the experimental results for graphite than Tait’s formulation. Thus it is concluded that, the well known and widely used Murnaghan EOS is still most suitable and valid for the bulk as well as nanomaterials. The present study also reveals the fact that individual carbon nanotubes are less compressible than bundles of carbon nanotubes.
 
 
 
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