Orange is used in the juice industry, yielding important quantities of by products.
Orange peel is analyzed for chemical composition and water holding capacity. Data show
that, it has high amount of crude fiber, phenolic contents and antioxidant ca
pacity, also it
has high level of water holding capacity. Biscuits are prepared from blendes which contain
a different proportion (5, 10, 15, 20 and 25)% of orange peel flour are also evaluate for
physical and sensory characteristics, chemical composition and rheological properties for
this blendes.
The sensory evaluation does not show any significant difference between control and
that adds with 10% of orange peel flour. Physical parameters, namely, diameter, thickness
and spread ratio were tested. The diameter and thickness of orange peel substituted biscuits
were decreased, whereas spread ratio of biscuits increase with increasing levels of it.
The data reveals that incorporation of orange peel powder in biscuits increase crude
fiber, ash, phenolic contents and antioxidant capacity, it decreases the carbohydrate
content. Rheological properties of the blended flour show increase in water absorption and
stability.
Addition of 40ppm xylanase enzyme reduce the hardness value of the sample in
general, it also decrease the spread ratio as compared to control samples with no enzyme
added.
Sensory evaluation results show good overall acceptability scores for the biscuits
contain 10% orange peel with and without xylanase.
Cornstarch has been added, with percentages of ( 5%, 10%, 15%,20% and 25%), to
flour beans both types paste (peeled and non-peeled) prepared for the manufacture of a
quick vermicelli preparation (noodles), in order to study the effect of the additi
on of some
chemical and organoleptic characteristics of this product and to determine the ideal
proportion of corn starch added.
The study has shown that there is an inverse relationship between the reduction of
protein content and the increase of the fat percentage and the increase of starch proportion
up to (25%) in both kinds of bean noodles: peeled and unpeeled.
Increasing the ratio of starch above 15% has affected negatively the resulted noodles
colour and some organoleptic characteristics such as taste and smell with the emergence of
a gradual improvement of the appearance of noodles that resulted from flour peeled beans.
Finally , it was found that the best ratio of added starch is 15%.
The aim of this study is to use local cheese and additions in producing
processed cheese spread with good sensory and chemical characteristics. The
results show that the best mixture can be used through experiment and sensory
evaluation, where the
percentage of total dry material in produced processed
cheese is 38.6%, fat percentage is 53% and total count bacteria after
manufacturing & after storage for 8 weeks in temperature of 5-7° is 5×101
cell/g. These bacteria are gram positive rod bacteria spores. This means that
heat processing was highly efficient in destroying the green bacterial cells, and
storage in temperature of 5-7° doesn't allow growth of bacteria spores. While
samples which stored in temperature of 20-25° show increasing total count
bacteria from 5×101cell/g directly after manufacturing to 12×101 & 20×101
cell/g after 8 weeks of storage without any changes in quality characteristics.
We conclude from these results that this product needs refrigerated storage, for
conservation product quality if storage more than 8 weeks.