Interactive effects of relative humidity, coating method and storage period on quality of carrot (cv. nantes) during cold storage
2009
Rashidi, Majid | Hosseini Bahri, Mahdi
This study was conducted on the interactive effects of Relative Humidity (RH), Coating Method (CM) and Storage Period (SP) on Nantes carrot during cold storage at temperature of 0.5°C. Two RH (85% and 90%), four CM [Carboxy Methyl Cellulose + Cellophane Film (CMC + CF), Carboxy Methyl Cellulose (CMC), Cellophane Film (CF) and No-Coating (NC)] and nine SP (0, 30, 45, 60, 75, 90, 100, 110 and 120-days) were investigated for some qualitative characteristics including water content, total soluble solids (TSS), reducing sugar and firmness. A factorial experiment design was laid out in completely randomized design with 3 replications for each one of factors and Duncan's multiple range tests were performed to compare the means of different treatments. The statistical results of the study indicated that RH, CM and SP significantly (P <or= 0.01) affected all traits. Interactions of RH x SP, CM x SP for all traits, and RH x CM for water content and TSS were also significant. The statistical results of the study also indicated that at 90% RH, carrots were firmer, and had higher water content and reducing sugar than 85% RH. Moreover, CMC + CF for water content and reducing sugar, and CF for firmness were the best CM. In addition, water content, reducing sugar and firmness decreased by increasing the SP, whereas TSS increased by an increase in SP.
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