Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2019
Volume 22
Issue 4
Topic:
Biotechnology
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Grabarczyk M. , Wińska K. , M±czka W. 2019. BIOTRANSFORMATION AND ODOUR CHARACTERISTIC OF THE LACTONIC BETA-IONONE DERIVATIVES
DOI:10.30825/5.ejpau.179.2019.22.4, EJPAU 22(4), #01.
Available Online: http://www.ejpau.media.pl/volume22/issue4/abs-01.html

BIOTRANSFORMATION AND ODOUR CHARACTERISTIC OF THE LACTONIC BETA-IONONE DERIVATIVES
DOI:10.30825/5.EJPAU.179.2019.22.4

Ma³gorzata Grabarczyk, Katarzyna Wińska, Wanda M±czka
Department of Chemistry, Wroc³aw University of Environmental and Life Sciences, Poland

 

ABSTRACT

Three halolactones with the trimethylcyclohexene system obtained from beta-ionone by chemical synthesis were biotransformed by filamentous fungal cultures (Fusarium, Absidia, Aspergillus). Bromolactone, converted to hydroxylactone by hydrolytic dehalogenation, was the most susceptible to the action of microorganisms. However, chloro- and iodolactone were only slightly transformed. Both substrates and product were subjected to odour evaluation. The one of them, iodolactone had a very interesting coconut-cream fragrance. The fragrance of a biotransformation product, a hydroxylactone, was less interesting than the odour of its precursor. The significant differences between the odours of lactones obtained from beta-ionone with their corresponding earlier obtained alpha-ionone derivatives were presented.

Key words: beta-ionone, lactones, odour activity, hydrolytic dehalogenation.


Ma³gorzata Grabarczyk
Department of Chemistry, Wroc³aw University of Environmental and Life Sciences, Poland
ul. Norwida 25
50-375 Wroc³aw
Poland
email: malgorzata.grabarczyk@upwr.edu.pl

Katarzyna Wińska
Department of Chemistry, Wroc³aw University of Environmental and Life Sciences, Poland
ul. Norwida 25
50-375 Wroc³aw
Poland
email: katarzyna.winska@upwr.edu.pl

Wanda M±czka
Department of Chemistry, Wroc³aw University of Environmental and Life Sciences, Poland
ul. Norwida 25
50-375 Wroc³aw
Poland
email: wanda.maczka@upwr.edu.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.