Abstract
Wheat based products are consumed as staple food in most the of Asians countries, hence different wheat cultivars are purposely developed to meet the diverse ecological conditions. These cultivars carry difference in their rheometry nutrition and gluten microstructure that affect the overall product quality. In the present investigation ten wheat varieties were selected from two most common ecological zones i.e. rain fed and irrigated. In general, non-significant differences were observed in most of nutritional parameters however, tremendous variations were studied in rheometry and functional features. More than fifteen parameters were linked through Principal Competent Analysis (PCA) which has segregated the cultivars in to four groups. Analyses of secondary structure of gluten were also analysed through Fourier Transform Infrared spectroscopy (FTIR) and hierarchical cluster for FTIR gluten structure divided wheat cultivars in three groups. Results revealed that wheat cultivars (Borlog-2015 and Zincole-2016) having high protein contents (15%), more water absorption capacity (72.0%), dough development time (11.2 min), stability time (15 min) and mixing tolerance index (11.0 min) made their own cluster and showed variable spectra estimated between the 1750 to 1500 cm-1. On the bases of findings of both PCA model and clustering of FTIR proteins, it was revealed these two cultivars are suited for bread making. In contradiction to above features other two cultivars (Pirsabak-2005 and Wafaq-2001) were found good for making biscuits.
Keywords:
rheometry nutrition; FTIR proteins; PCA model; wheat secondary structure
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