Each of concentrated extract of tomato by-products with addition ratio 0.1, 0.2, 0.3 and 0.4%, signed as T1, T2, T3 and T4, respectively and crude tomato by-products with addition ratio 3, 4.5, 6 and 7.5%, respectively, signed as T5, T6, T7 and T8, respectively as additives in beef burger manufacture. Results of sensory evaluation of manufactured samples did detect any significantly differences between them in studies characters whereas T8 was the highest in color, treatments T1 and T8 showed its strike in flavor and the juiciness character was relevant in treatments T2 and T8. Tenderness was high for temperature T2 and T8, general acceptance in treatments T2, T7 and T8 and odor was not affected by treatments.
Study of chemical and physical characters of manufacture burger through storing times which is ranged between 0-3 weeks confirmed in that samples T5-T8 maintained hydrogen number not more than 6.12 comparing samples T0 , T1, T2 , T3 and T4 which in their hydrogen numbers was increase to higher than 7.28 in the first week from storage. Water holding capacity (WHC) in samples T1, T4 and improved by 7.44% as compared with control sample (T0) which lost 12.56%. From WHC. The WHC in samples T5-T8 increased with adding percent of crude by-products and reached 7.67%. Also, the results showed that free fat acids (FFA) increased in control sample (T0) more than in other samples that increased in its peroxide value discriminately but less share; the most stable sample peroxide value was the treatment T8 that included the highest proportion of by-products 7.5%. Results of peroxide value and thiobarbituric acid value insured free fat acids tests. Whereas all samples showed stability in peroxide value and thiobarbituric acid with special superiority of samples T6, T7 and T8. For lycopene and concentration test all samples maintained saved at concentrations of lycopene and which increased with addition value. According to this, T8 had higher concentration 20.760 mg. g-1 than control sample (T0) which reached 1.285 mg. g-1 of lycopene.