Chemical and biological evaluation of tomato processing wastes.

ABSTRACT

Chemical and biological evaluation of tomato seeds and total tomato processing wastes was investigated. The defatted tomato seeds and total tomato processing wastes meals found to contain about 37 and 27% protein, respectively. The most predominant element was phosphorus in both investigated meals, followed by potassium and magnesium. Linoleic acid was the major fatty acid in both tested meals oil, followed by oleic acid. Valine was the first limiting amino acid, while isoleucine was the second limiting amino acid in the defatted tomato seed meal. It was also found that threonine and isoleucine were the first and second limiting amino acids in the defatted total tomato processing wastes meal, respectively. Biological studies of both investigated meals indicated low values for net protein utilization, digestibility, biological value and protein efficiency ratio when compared with the control