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• Open Access   Article

  Determining Level of Trans-Resveratrol in Wines produced from some of the Rare Georgian Red Grape Varieties

  L. Gurgenidze, T. Sachaneli, T. Kanchaveli, G. kvartskhava

  Research Paper | Journal-Paper (IJSRCS)

  Vol.8 , Issue.1 , pp.1-3, Feb-2021

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  Abstract
  The interest in red wine is continuously growing worldwide. Customers` taste changes with years, but one thing remains the same – wine has to satisfy all the requirements, including combining health benefits with a pleasant taste and feeling it can induce. We are currently trying to merge the newest technologies with the knowledge gained through the centuries and traditional ways of winemaking. The traditional technology of producing wine consists of keeping juice on pomace. During this process, phenolic and other aromatic substances are extracted from the grape`s hard parts (grape pip, grape, skin, and stalk of grapes) in the juice and then into the wine. One of the most important phenolic compounds is Resveratrol (3,5,4` - Trihydroxistilben), a natural stilbene in wine and grapes. It also is a strong antioxidant and determines the healing properties of wine. We determined Resveratrol levels by high-performance liquid chromatography in wines produced from five less known Georgian red grapevine varieties (Simonaseuli, Gabasha, Adreuli Shavi, Sreluri, and Saperavi). It turned out that all the mentioned varieties are rich in Resveratrol, which is a reason for a growing interest in the wines produced. All said above creates a solid foundation for growing wine assortment that will be capable of satisfying all the market requirements.

  Key-Words / Index Term
  Grape; Wine; Resveratrol; High-Performance Liquid Chromatography; Phenolic Compounds

  References
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  Citation
  L. Gurgenidze, T. Sachaneli, T. Kanchaveli, G. kvartskhava, "Determining Level of Trans-Resveratrol in Wines produced from some of the Rare Georgian Red Grape Varieties," International Journal of Scientific Research in Chemical Sciences, Vol.8, Issue.1, pp.1-3, 2021

• Open Access   Article

  Physico-Chemical Characteristics of Ground Water in Rahuri Tahsil of Ahmednagar District, M.S., India

  Soniya Sonkar, Deepak Janardhan Gadekar

  Research Paper | Conference-Paper (IJSRCS)

  Vol.8 , Issue.1 , pp.4-8, Feb-2021

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  The Physico-chemical study of ground water from downstream area of Pravara River in Rahuri taluka reveals that, the quality of ground water in the study area is not same at different sampling stations. The main reason behind this variation may be the variation in geographical conditions and anthropogenic activities. The study reveals that, in general, the ground water available in rahuri is moderately benign in irrigation. It is suggest that, quality of ground water should be improve slightly and maintained properly. The present study may prove to be of some help in understanding the quality of ground water resources of the study area.

  Key-Words / Index Term
  Ground water, Quality, Characteristics, Physico-chemical, Parameters

  References
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  Citation
  Soniya Sonkar, Deepak Janardhan Gadekar, "Physico-Chemical Characteristics of Ground Water in Rahuri Tahsil of Ahmednagar District, M.S., India," International Journal of Scientific Research in Chemical Sciences, Vol.8, Issue.1, pp.4-8, 2021

• Open Access   Article

  Effect of Chemical Mutagens on Alpha Amylase Activity of Bacillus Amyloliquefaciens

  U.U. Zango, M. Ibrahim, M. Suleiman

  Research Paper | Journal-Paper (IJSRCS)

  Vol.8 , Issue.1 , pp.9-16, Feb-2021

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  Abstract
  In this research, the influence of different mutational treatments (Ethidium bromide (EtBr) and acrylamide treatment) on amylase production was studied. EtBr mutant showed increased in alpha amylase activity at 200µg/ml with enzyme activity compared with the wild strain at different incubation time. Increase in EtBr concentration from 200 µg/ml, 300 µg/ml and 400 µg/ml shows increase in enzyme activity 0.603455 U/ml, 0.652753 U/ml and 0.711182 U/ml respectively. Decreased in enzyme activity was observed in EtBr mutant exposed to 500 µg/ml and 600 µg/ml with enzyme activity 0.661883 U/ml and 0.579718 U/ml respectively. Acrylamide mutant showed no increase in enzyme activity at concentration of 200 µg/ml compared with wild strain at different incubation time. Increase in acrylamide concentration from 200 µg/ml, 300 µg/ml and 400 µg/ml shows increase in enzyme activity (0.267492 U/ml, 0.740396 U/ml and 0.818909 U/ml respectively). At concentrations of 500 and 600 the enzyme activity decreased with enzyme activity 0.683793 U/ml and 0.42817 U/ml.

  Key-Words / Index Term
  Amylase, acrylamide, bacillus, mutant

  References
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  Citation
  U.U. Zango, M. Ibrahim, M. Suleiman, "Effect of Chemical Mutagens on Alpha Amylase Activity of Bacillus Amyloliquefaciens," International Journal of Scientific Research in Chemical Sciences, Vol.8, Issue.1, pp.9-16, 2021

• Open Access   Article

  Investigation the Effect of Agitation and Flow Rate in Three-Stage Continuous Stirred Tank Reactors Connected In Series for Ethyl Acetatesaponification Reaction

  E.Y. Melesse, S.W. Jima, M.K. Gebremeariam, Z.B. Asrat, D.A. Gesese, A.A. Dubero

  Research Paper | Journal-Paper (IJSRCS)

  Vol.8 , Issue.1 , pp.17-20, Feb-2021

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  Abstract
  Investigation study of three-stage continuous stirred tank reactor for ethyl acetate hydrolysis reaction has been accompanied. Sodium hydroxide and Ethyl acetate were selected for reaction evaluation.The parameters evaluated for saponification reaction were flowrate (40ml/min,70 ml/min, and 100 ml/min), agitation rate (minimum, medium, and maximum), and temperature of non-isothermal conditions.Nine experimental performances were investigated and for all the experiments initial concentration of ethyl acetate and sodium hydroxide were constant. The NaOH(4%)and CH3COONA (6%) were used for the data recorded. The minimum conductivity values, the maximum temperatures, and conversion values of the reaction were 45.2%,66.34% at a temperature of 24.9 °C for R1,41.1%, 69.53%at a temperature of 24.5 for R2, and 40.7%, 69.76 % at the temperature of 24 ºC for R3for 40 ml/min flowrate and minimum agitation rate individually. Based on the medium agitation rate and medium flow rate (70ml/min)the minimum value of conductivity and maximum value of conversion was 38.3% and 71.59% obtained at a temperature of 27.1 °C of R1,30.5%, and 77.53% at a temperature of 27.5 °C of R2, 27.8% and 79.59% at a temperature of 26.8 °Cof R3 respectively.Compared to others the reactions operated at a maximum flow rate (100ml/min) and maximum agitation rate of the conductivity and conversion values were 43.1% and 67.94% of R1 at the temperature of 27.8 ºC,34.4 % and 74.56% R2, 34.1% and 74.79 % of R3 at the temperature of 28.3 °C. The three-stage CSTRs connected in series value of conductivity decreased accelerable, but the value of conversion increased progressively. The results gained in this evaluation may help optimize the production of desired products at a large level and predict the advantage of multiple-stage reactors connected in series extraappropriate for the saponificationreaction of ethyl acetate.

  Key-Words / Index Term
  three-stage continuous stir tank reactors; saponification; conductivity; flow rate; conversion; agitation rate

  References
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  Citation
  E.Y. Melesse, S.W. Jima, M.K. Gebremeariam, Z.B. Asrat, D.A. Gesese, A.A. Dubero, "Investigation the Effect of Agitation and Flow Rate in Three-Stage Continuous Stirred Tank Reactors Connected In Series for Ethyl Acetatesaponification Reaction," International Journal of Scientific Research in Chemical Sciences, Vol.8, Issue.1, pp.17-20, 2021