Abstract:
To evaluate the physicochemical characteristics of five varieties of
rapeseed and mustard were taken to study their seed weight, moisture,
ash, carbohydrate, protein, fat, total energy of the whole seed and
chemical constant and fatty acid composition of oil and finally minerals
composition of oilcake. Among the varieties Tori-7 contained the highest
thousand grain weight (4.53 ± 0.10 g) and moisture percentage (4.68 ±
0.02%) whereas Sampad contained the highest amount of oil content
(43.23 ± 1.06%) and gross energy (553.51 ± 5.20 kcal/g) but the lowest
amount of ash (11.05 ± 0.03%). Significantly the highest amount of
protein (26.80 ± 0.07%) and carbohydrate (22.29±0.81%) was observed
in BARI Sarisha-15. In case of chemical constant the highest
saponification value (168.25
± 0.15) and iodine value (106.27 ± 1.03) and
the lowest acid value (1.20
± 0.02) were observed in BARI Sarisha-15.
Significantly the highest amount of linoleic acid was observed in Sampad
where the highest amount of palmitic acid (3.23
II
± 0.05%) and erucic acid
(51.43
± 0.02%) were found in BARI Sarisha-17 and the highest amount
of behenic acid (1.31 ± 0.03%), total saturated fatty acid (TSFA) (11.30 ±
0.19%) was found in BARI Sarisha-14. The concentration of stearic acid
varied from 1.20 ± 0.02% to. 1.56 ± 0.03%; whereas arachidic acid
contents ranged from 4.04
± 0.07% to 5.65 ± 0.09%. On the other hand,
BARI Sarisha-15 contained the highest amount of oleic acid (18.44 ±
0.03%) and total unsaturated fatty acid (TUFA) (89.11 ± 0.03%). BARI
Sarisha-14 contained the highest amount of calcium (0.44 ± 0.01%),
potassium (0.90 ± 0.01%), copper (13.00 ± 0.86 ppm), and manganese
(31.25±3.25ppm). BARI Sarisha-17 contained the highest amounts of
magnesium (0.45 ± 0.01%), phosphorous (1.09 ± 0.03%) and Tori-7
contained the highest amounts of sulfur (0.43 ± 0.01%), iron (248.25 ±
3.25ppm), and zinc (48.37 ± 1.8ppm). However, this study suggested that
although BARI Sarisha-14 contained notable mineral composition but in
terms of qualitative aspect, BARI Sarisha-15 performed better over
Sampad and Tori-7.
Description:
A Thesis
Submitted to The Department of Biochemistry,
Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree of
MASTERS OF SCIENCE (MS)
IN
BIOCHEMISTRY
