25.12.2012 Views

4 °C - the National Sea Grant Library

4 °C - the National Sea Grant Library

4 °C - the National Sea Grant Library

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

hydrolysates than non-enzyme treated PBs flavor concentrates. Number and intensity<br />

of odorants in PBs flavor concentrates were higher than for CPBs. Evaporation<br />

(ei<strong>the</strong>r atmospheric or vacuum) of flavor concentrates decreased <strong>the</strong> number and<br />

intensity of <strong>the</strong> odorants. Predominant odorants were identified as 2-acetyl-lpyrroline<br />

(popcorn), 2-ethyl-3,5-dimethylpyrazine (baked potato), 2,3-butanedione<br />

(buttery), (Z)-4-heptenal (fishy and rancid), and dimethyl trisulfide (cooked cabbage).<br />

ACKNOWLEDGEMENTS<br />

Approved for publication by <strong>the</strong> Louisiana Agricultural Experiment Station as<br />

manuscript No. 94-21-8373. Support for this study was provided by <strong>the</strong> Louisiana<br />

Crawfish Promotion & Research Board.<br />

REFERENCES<br />

Acree, T.E., Barnard, J., and Cunningham, D. 1984. A procedure for <strong>the</strong> sensory<br />

analysis of gas chromatographic effluents. Food Chem. 14: 273-286.<br />

Baek, H.H. 1994. Enzymatic hydrolysis of crawfish processing by-products for<br />

bioflavor production. Ph.D. Dissertation, Louisiana State University, Baton<br />

Rouge, LA.<br />

Cadwallader, K.R., Baek, H.H., Chung, H.Y., and Moody, M.W. 1994. Contribution<br />

of lipid-derived components to <strong>the</strong> flavor of alligator meat. Ch. 13, In Lipids<br />

in Food Flavors. C.-T. Ho and T.G. Hartman (Ed.), 186-195, ACS<br />

Symposium Series 558, American Chemical Society, Washington, DC.<br />

Chen, F. 1994. Unpublished data. Dept. of Food Science, Louisiana State University,<br />

Baton Rouge, LA.<br />

Dziezak, J.D. 1986. Biotechnology and flavor development; Enzyme modification of<br />

dairy products. Food Technol. 40(4): 114-120.<br />

Ho, C-T., Bruechert, L.J. Zhang, Y., and Chiu, E-Mean. 1989. Contribution of lipids<br />

to <strong>the</strong> formation of heterocyclic compounds in model systems. Ch. 10, In<br />

Thermal Generation of Aromas. T.H. Parliment, R.J. McGorrin and CT. Ho<br />

(Ed.), 105-113, ACS Symposium Series 409, American Chemical Society,<br />

Washington, DC.<br />

Kim, H.R., Baek, H.H., Meyers, S.P., Caclwallader, K.R., and Godber, J.S. 1994.<br />

Crayfish hepatopancreatic extract improves flavor extractability from crab<br />

processing by-product. J. Food Sci. 59: 91-96.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!