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Titolo:
Conversion of ferulic acid to 4-vinyl guaiacol by yeasts isolated from unpasteurised apple juice
Autore:
Donaghy, JA; Kelly, PF; McKay, A;
Indirizzi:
DeptNorthNo Ireland, Food Sci Div Food Microbiol, Belfast BT9 5PX, Antrim,Dept Agr No Ireland Belfast Antrim North Ireland BT9 5PX BT9 5PX, Antrim, QueensAntrim,elfast, Sch Agr & Food Sci, Dept Food Sci Microbiol, Belfast,Queens Univ Belfast Belfast Antrim North Ireland Sci Microbiol, Belfast,
Titolo Testata:
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
fascicolo: 3, volume: 79, anno: 1999,
pagine: 453 - 456
SICI:
0022-5142(19990301)79:3<453:COFAT4>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORANGE JUICE; SACCHAROMYCES-CEREVISIAE; PSEUDOMONAS-FLUORESCENS; PHENOLIC COMPOSITION; ESTERASE-ACTIVITY; DECARBOXYLASE; TRANSFORMATIONS; 4-VINYLGUAIACOL; PURIFICATION; STORAGE;
Keywords:
yeasts; apple juice; feruloyl esterase; ferulic acid decarboxylase; 4-vinyl guaiacol;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Donaghy, JA Dept9Agr No Ireland, Food Sci Div Food Microbiol, Newforge Lane, Belfast BT Dept Agr No Ireland Newforge Lane Belfast Antrim North Ireland BT9 5PX
Citazione:
J.A. Donaghy et al., "Conversion of ferulic acid to 4-vinyl guaiacol by yeasts isolated from unpasteurised apple juice", J SCI FOOD, 79(3), 1999, pp. 453-456

Abstract

Yeasts were isolated from unpasteurised apple juice on potato dextrose agar supplemented with tartaric acid and on malt extract agar containing chloramphenicol. Isolates were screened for feruloyl esterase and ferulic acid decarboxylase activities. Strains of Rhodotorula rubra, R minuta and Candidalambica produced both enzymes. Ferulic acid decarboxylase activity, resulting in the formation of the off-flavour 4-vinyl guaiacol, was highest for the C lambica isolate. This decarboxylase activity was associated with the washed resting cells. The crude enzyme showed temperature and pH optima of 35 degrees C and 6.5, respectively. (C) 1999 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 14:12:47