الفهرس 
AIM OF RESEARCHOnly 14 pages are availabe for public view
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Abstract
Guava and tomato are the most important fruits grown in Egypt. Large quantities of these fruits are widely processed to produce many products such as juices, nectars, jams and concentrated syrups. Large quantities of wastes are being left over and disposal of these waste materials becomes difficult and causes serious problems, where they are considered a main source of microbial contamination and pollution. Peels and seeds are the most important wastes remaining after the processing of guava and tomato fruits. These wastes represent about 22 and 7.84 %, respectively, and have good potential sources of dietary fibers, oils and phenolic compounds. Therefore, this work was a trial to utilize these wastes as food additives as source of dietary fibers and untraditional sources of bioactive compounds in foods. And the aims of this study were:
1- Preparation of the raw materials for dietary fibers and antioxidants extraction from some processed food wastes.
2- Determination of the gross chemical composition of guava and tomato waste powders (peels and seeds).
3- Determination of dietary fibers and antioxidants.
4- Using guava and tomato waste powders (peels and seeds) as sources of dietary fibers and antioxidants at levels of 5, 10 and 15% for preparing cup cake and beef burger.
5- Evaluation these products chemically, nutritionally as well as their physical, functional and sensory properties.
6- Study the effect of products storage at 4°C temperature for 28 days on physical, functional, and sensory properties of the accepted beef burger as well as their antioxidant activity.