Physiochemical assessment of released tomato (Solanum lycopersicum L) varieties to Sudanese environment

Abstract

This study aimed to perform comparative evaluation for physical, chemical, nutritional and sensory parameters with three released tomato (Lycopersicon esculentum) varieties for Sudan climate; Castle Rock, Dar-mali and Zahrat Elneel. There was some variation observed in chemical and physical characteristics between the three varieties. The three varieties were medium-size to small, round to ellipsoid, red to orange-red in colour. In terms of chemical composition, the dry matter was 6.0, 5.7 and 5.0%, total soluble solids was 5.1, 5.1 and 4.5%, ash was 5.48, 5.8 and 7.78%, fiber was 9.72, 6.43 and 14.66%, total sugars were 20.94, 20.0 and 20.3%, titratable acidity was 0.26, 0.2 and 0.3% for Dar-mali, Castle Rock and Zahrat Elneel, respectively. The level of lycopene and β-carotene were assessed in the three varieties in the levels of 12.877-15.63 and 7.92-8.87 mg/100g, respectively. The mineral composition of tested varieties was obtained and compared to their RDA. The most abundant mineral was K (299-416 mg/100g) which was more than its RDA. Appropriate amounts of Na and Mg were found. However, varieties were low in Ca. Among micro-elements, appropriate amounts of Mn, Cu, Fe and Zn were also detected. Fruits were organoleptically assessed. The three tested fruits gained high level of overall acceptability (91.1-92.71%).