Abou Baker,, M., Abd EI-Aziz, K., EI-Deeb, S., Mahmood, S., Ahmed, S. (2003). RELATION BETWEEN HARVESTING STAGE AND VOLATILE OIL CONTENT OF SOME CARROT VARIETIES. Journal of Plant Production, 28(1), 433-450. doi: 10.21608/jpp.2003.242161
M. A. Abou Baker,; K. A. Abd EI-Aziz; Suher M. A. EI-Deeb; S. Mahmood; S. A. H. Ahmed. "RELATION BETWEEN HARVESTING STAGE AND VOLATILE OIL CONTENT OF SOME CARROT VARIETIES". Journal of Plant Production, 28, 1, 2003, 433-450. doi: 10.21608/jpp.2003.242161
Abou Baker,, M., Abd EI-Aziz, K., EI-Deeb, S., Mahmood, S., Ahmed, S. (2003). 'RELATION BETWEEN HARVESTING STAGE AND VOLATILE OIL CONTENT OF SOME CARROT VARIETIES', Journal of Plant Production, 28(1), pp. 433-450. doi: 10.21608/jpp.2003.242161
Abou Baker,, M., Abd EI-Aziz, K., EI-Deeb, S., Mahmood, S., Ahmed, S. RELATION BETWEEN HARVESTING STAGE AND VOLATILE OIL CONTENT OF SOME CARROT VARIETIES. Journal of Plant Production, 2003; 28(1): 433-450. doi: 10.21608/jpp.2003.242161
RELATION BETWEEN HARVESTING STAGE AND VOLATILE OIL CONTENT OF SOME CARROT VARIETIES
1Horticulture Department, Faculty of Agriculture in EI-Minia University
2Horticulture Research Institute
Abstract
Two varieties of carrot plant namely Chantenay Red Cored and 8alady selected, were evaluated for their contents of volatile oil percentage and volatile oil yields during two successive seasons 1994/1995 and 1995/1996. The obtained results were as follows:-
The volatile oil content of carrot fresh herb in " 8alady Selected " variety was higher than Chantenay Red Cored in the all six growth periods.
The volatile oil percentage of carrot fresh herb of 8alady Selected and Chantenay Red Cored raised gradually from 60 till 90 days after sowing and reached to a maximum value. However it was low at the period from 105 to 135 days after sowing for 8alady Selected after that period the percentage slightly fluctuated starting from the age 105 days till the end of experiment.
The volatile oil percentage and the volatile oil yield of carrot fresh root of 8alady Selected were lower than those of Chantenay Red Cored variety.
The volatile oil percentage of 8alady Local carrot seed was higher than that of Chantenay Red Cored and 8alady Selected, varieties.
The Chemical composition of volatile oil using gas chromatography (G-C) and gas chromatography spectrometry (i.e. as a tool of compound identification) in the different parts of carrot varieties under study, revealed the presence of more than 10 compounds, some of which were identified as follows: •
a- In the herb :-
The major identified compounds in 8alady selected were (p-myrcene (15.14 %), limonene (12.83%), cis-trans famesol (8.40%), ,B-caryophyllene (7.48%). While the major identified in Chantenay compounds are the followings (p- caryophyllene (17.34%), ,B-myrcene (1q.61%), germacrene (9.35%), trans-ocimene (8.60%).
b-ln the root at harvesting stage:-
The major identified compounds in 8alady selected were phytole (15.20%), ,B-caryophyllene (9.51%), terpinolene (7.55%), 2-propanone (7.46%).
The major identified compounds in Chantenay were (,B-caryophyllene (25.42%), terpinolene (16.16%), a-famesene (14.37%), limonene (8.59%).
c- In the fruits (seeds) :-
The major identified compounds in 8alady Selected were (p-bisabolene (72.45%), cis iso elemicin (11.75 %), a-caryophyllene (4.35%), ,B-caryophyllene (2.00%).
The major identified compounds in Chantenay Red Cored selected were (carotol (35.86%), a-famesene (5.19%), sabinene (5.19%), a-pinene (4.33%).
The major identified compounds in Balady local were (cis trans famesene (27.29%), p'asarone (17.11 %), carotol (14.85%), and caryophyllene oxide (3.39%).
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