Effect of Drying On Physic-Chemical and Nutritional Properties of Fenugreek Leaves
Uticaj sušenja na fizičko-hemijska i nutritivna svojstva listova piskavice
Attkan, Arun Kumar
fenugreek green leaves
zeleni listovi piskavice
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Drying of fenugreek green leaves (Trigonella foenum-graecum) was conducted by using desiccant dehumidifier dryer at different temperatures viz. 45, 50 and 55°C. Obtained experimental data including moisture content, rehydration ratio, ascorbic acid and carotenoids were analysed via random factorial scheme. Comparison of data average was carried out with the help of the statistical analysis tool. Statistical analysis of experimental data showed that time, temperature, and their combined effect had a reasonable effect on the drying rate, moisture content, rehydration, ascorbic acid and carotenoids value of dried samples. However, a combined effect of time and temperature on the drying rate was not significant (P>0.05). The lack of fit for rehydration ratio and ascorbic acid was not significant but the values for drying rate, moisture content and carotenoids were significant. The drying rate was 6.37, 7.37 and 7.95 kg water/kg dry matter at drying air temperatures of 45, 50 and 55°C, respectively during first hour of drying (initial moisture content 88.60% wb) and declined afterwards. The results also showed that increasing time and temperature (45, 50 and 55 °C) leads to decrease in ascorbic acid (192.4, 185.3 and 170.6 mg/100g) and carotenoids (25.2, 20.5 and 17.3 mg/100g) of the samples, but it increased the value of rehydration ratio (3.8, 4.0 and 4.5 g/g) of the samples.Zeleni listovi piskavice (Trigonella foenum-graecum) sušeni su na temperaturama od 45, 50 i 55°C. Dobijeni eksperimentalni podaci, uključujući sadržaj vlage, odnos dehidracija, askorbinske kiseline i karotenoidi su statistički obrađeni. Analiza je pokazala da su vreme, temperatura i njihov kombinovani efekat imali značajan uticaj na brzinu sušenja, sadržaj vlage, dehidraciju, askorbinsku kiselinu i karotenoide suvih uzoraka. Kombinovani efekat vremena i temperature na stope sušenja nije bio značajan (P> 0,05).