Peer Reviewed Journal Articles (Inter.) (Engg)

Permanent URI for this collection

http://localhost:4000/handle/123456789/1879

Browse

Browsing Peer Reviewed Journal Articles (Inter.) (Engg) by Author "D.S. Aniesrani Delfiya"

Now showing 1 - 2 of 2
  • Item
    Kinetics, modelling and evaluation of Bombay duck (Harpodon nehereus) dried in solar-LPG hybrid dryer
    (Elsevier, 2022-07-16) P.V. Alfiya; S. Murali; D.S. Aniesrani Delfiya; K.R. Sreelakshmi; G.K. Sivaraman; George Ninan
    This work investigated the kinetics, modelling and quality of Bombay duck (Harpodon nehereus) dried in the solar-LPG hybrid dryer. The moisture content of the Bombay duck was lowered from 86.4 ± 0.52% to 16.4 ± 0.67% (w.b) within 11 h. The reduction in weight of Bombay duck samples during drying was measured at 1 h interval. LPG backup maintained the desirable drying conditions in the dryer. The drying process was observed to occur under the falling rate period. Effective moisture diffusivity during drying of Bombay duck was determined to be 3.7 × 10 -10 m2/s. Drying parameters were fitted into thin layer drying models. The Page model was a suitable fit for the data under study (R2 = 0.9986, RMSE = 0.01268 and χ2 = 0.000134). The maximum drying and collector efficiency recorded for Bombay duck drying in solar-LPG dryer was 40.67% and 33.7%, respectively. The rehydration ratio and shrinkage of dried Bombay duck were found to be 1.94 and 26.42% respectively. Microbial analysis of dried fish was within the safe limits. Benefit-cost ratio, payback period, NPW, annuity and IRR were also determined to check the economic feasibility of the study.
  • Item
    Quality evaluation of solar and microwave dried shrimps – A comparative study on renewable and dielectric heating methods
    (Elsevier, 2022-11-01) P.V. Alfiya; G.K. Rajesh; S. Murali; D.S. Aniesrani Delfiya; Manoj P. Samuel; M.V. Prince
    The study investigated the quality of shrimp dried under solar and microwave drying conditions. Microwave drying shortened the drying times to 58.3 % as compared to solar drying with increased drying rates. Effective moisture diffusivities of solar and microwave dried shrimp were 2.3 × 10 -10 m2 /s and 6.7 × 10-7 m2/s respectively. Drying and collector efficiency was in the range of 26.3 – 33.4 % and 32.5 – 41.2 % respectively for solar drying whereas the efficiency under microwave drying was 35.7 %. Textural attributes of solar-dried shrimp were superior to microwave-dried samples. The rehydration ratio and shrinkage of solar and microwave dried samples were 2.39 and 24.67 % and 2.51 and 14.14 % respectively. Biochemical and microbiological analyses of dried shrimp under both drying methods were found to be within safe limits. Economic analysis of solar and microwave dried shrimp showed that solar drying is more economically viable than microwave drying for the production of dried shrimp.