The Effect of Drying Temprature on Drying Time and Rehydration Rate of White Button Mushroom (Agaricus bisporus) in Halogen Heater

Öz

   Present work investigated the effect of drying temperature on drying time and rehydration rate of white button mushroom (Agaricus bisporus) in halogen heated drier. Samples having 1 cm thickness were dried at 40, 50 and 60^oC in halogen heated drier. Drying curves were prepared from the plots of sample weight losses during drying at the time interval of 10 min for first hour of drying and 30 min for the rest. Rehydration rates were determined by the weight gain of dried samples in 10, 20, 30 60 and 1440 mins of rehydration. Drying time of mushroom samples to reach final moisture content of 6.58% were 480, 240 and 150 min for drying at 40, 50 and 60^oC while rehydration rates were 92.02, 90.53 and 90.40% respectively. Study showed that the increase in drying temperature resulted in decrease drying time and rehydration rate. Two way variance analyses indicated that the effect of drying temperature increase on drying time was statistically important (p<0.05) this effect on rehydration rate was not statistically important (p>0.05).

Anahtar Kelimeler

• White button mushroom,halogen heater,drying curves,rehydration

Halojen Isıtıcılı Kurutucuda Kurutma Sıcaklığının Beyaz Şapkalı Mantarının (Agaricus bisporus) Kuruma Süresi ve Rehidrasyon Oranına Etkisi

Öz

Çalışmada halojen ısıtıcılı kurutmada kurutma sıcaklıklarının kültür mantarının (Agaricus bisporus) kurutulmasında kuruma süresi ve rehidrasyon oranına etkileri araştırılmıştır. 1 cm kalınlıkta kesit alınan örnekler halojen ısıtıcılı kurutucuda 40, 50 ve 60°C’de kurutulmuştur. Kuruma eğrileri ilk saatte 10’ar dk devamında 30 dk periyotlarda örnek ağırlıkları kaydedilerek oluşturulmuştur. Rehidrasyon oranı kurutulmuş örneklerin 10, 20, 30, 60 ve 1440 dakikalık rehidrasyon sonucu %ağırlık artışıyla ifade edilmiştir. Mantar örneklerinin 40, 50 ve 60°C’de kurutulmalarında son nem içeriğine (%6.58) ulaşma süreleri sırasıyla 480, 240 ve 150 dk iken rehidrasyon oranları %92.02, 90.53 ve 90.40 olarak kaydedilmiştir. Çalışmada kurutma sıcaklığının artmasının kuruma süresini kısalttığı ancak rehidrasyon oranında azalmaya sebep olduğu görülmüştür. İki yönlü varyans analizlerinde ise sıcaklık artışının kuruma süresi üzerine etkisi istatistiksel olarak önemli (p<0.05) iken rehidrasyon oranına etkisi önemsiz bulunmuştur (p>0.05).

Anahtar Kelimeler

• Beyaz şapkalı mantarı,A. bisporus,halojen ısıtıcılı kurutucu,kuruma eğrisi,rehidrasyon

Kaynakça

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