Peer Reviewed Journal Articles (Inter.) (Engg)
Permanent URI for this collection
Browse
Browsing Peer Reviewed Journal Articles (Inter.) (Engg) by Author "Delfiya, D.S.A."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- ItemDrying kinetics and quality characteristics of indian mackerel (Rastrelliger kanagurta) in solar-electrical hybrid dryer(Taylor & Francis Group, LLC, 2019) Murali, S.; Kumar, K.S.; Alfiya, P.V.; Delfiya, D.S.A.; Samuel, M.P.The aim of the study was to investigate the drying kinetics and quality Solar energy; hybrid dryer; characteristics of Indian mackerel dried under solar-electrical hybrid dryer modeling; drying kinetics; (S-EHD). Fresh Indian mackerel fishes (Rastrelliger kanagurta) were cleaned, quality cut into butterfly fillets, and salted overnight using a dry salting method (saltto- fish ratio, 1:3). The salted mackerel was dried in a S-EHD at the air temperature of 45-55°C, relative humidity of 47-62%, and air velocity of 0.60-0.80 m/s. Open sun drying (05D) of salted Indian mackerel was conducted to compare with S-EHD. The moisture content of the salted mackerel (61.5% w.b.) was reduced to 31.8% (w.b.) under S-EHD and 30.25% (w.b) under OSD in 8 and 32 h, respectively. The drying rate curve showed that mackerel drying occurred under falling-rate drying period in both the drying methods. A drying efficiency of 23.81% was observed for salted Indian mackerel drying under S-EHD. Diffusion approach and two-term models were selected to accurately predict the drying behavior of mackerel under S-EHD and OSD, respectively. Total volatile base nitrogen (TVB-N), trimethylamine, and thiobarbituric acid analysis of dried samples revealed that the mackerel dried under S-EHD was better than OSD. In the sensory analysis, samples dried under S-EHD recorded highest overall acceptability score.
- ItemEffect of microwave blanching and brine solution pretreatment on the quality of carrots dried in solar-biomass hybrid dryer(2018) Delfiya, D.S.A.; Mohapatra, D.; Kotwaliwale, N.; Mishra, A.K.The effect of microwave blanching time (0–3 min), followed by dipping in brine solution (sample to solution ratio 0–4) prior to drying of carrot slices and shreds in solar-biomass hybrid dryer on the final moisture content of the samples, drying rate, rehydration ratio, color change, textural firmness change, and beta carotene content was studied using two-factor 3 level factorial design. Pretreatment parameters were optimized using response surface methodology. As the microwave blanching time increased, there was an increase in the drying rate, rehydration ratio, and beta carotene content, with minimum changes in textural firmness, color, and final moisture content. Increase in brine solution to sample ratio impacted the drying rate and beta-carotene content in the samples, positively. Microwave blanching time of 3 min and brine solution to sample ratio of 2 were found to be the optimum pretreatment parameters for drying of carrot slices and shreds.
- ItemIn vitro release kinetics of spray dried curcumin-loaded egg albumin microparticles(2017) Delfiya, D.S.A.; Thangavel, K.Curcumin-loaded egg albumin microparticles were prepared by spray drying and the in vitro release profile was analyzed for 72 h. Results showed that the curcumin release rate was controlled by egg albumin concentration. The initial fast release and further controlled release of curcumin was observed in all formulations. Release data was fitted in mathematical models and found that curcumin release from all the formulations were best explained by Hixson-Crowell model followed by first order. Best fit of Hixson-Crowell model (R2>0.99) indicated a change in surface area and diameter of the microparticles with the progressive dissolution of egg albumin as a function of time. Release exponent (n) values of less than 0.4 indicated the Fickian diffusion controlled release of curcumin from microparticles. Spray drying can be suggested as a suitable method to prepare microparticles with controlled delivery of curcumin