Phytochemical analysis of Vietnamese propolis produced by the stingless bee Lisotrigona cacciae.
PLoS One
; 14(4): e0216074, 2019.
Article
em En
| MEDLINE
| ID: mdl-31017965
ABSTRACT
Propolis produced by the stingless bee Lisotrigona cacciae was studied for the first time. Using different chromatographic procedures, a total of eighteen constituents (phenols and triterpenes) were isolated, among which flavane 1, homoisoflavanes 2-4, and xanthones 5 and 6 were new for propolis. Propolis extract was also characterized by gas chromatography/mass spectrometry and other fifteen constituents were identified. The xanthone α-mangostin (8) demonstrated significant activity against Staphylococcus aureus with MIC and MBC 0.31 µg/ml, followed by 7,4'-dihydroxy-5-methoxy-8-methylflavane (1) with MIC 78 µg/ml and MBC 156 µg/ml. 10,11- Dihydroxydracaenone C (4), a component bearing ortho-hydroxyl groups, was the only compound displaying radical scavenging ability. Triple botanical origin of the sample was defined, consisting of Dracaena cochinchinensis, Cratoxylum cochinchinense and Mangifera indica. D. cochinchinensis is a new resin source of propolis.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Própole
/
Abelhas
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Compostos Fitoquímicos
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article