Environmental Engineering Reference
In-Depth Information
Trimethylresorcinol dervatives 2,4-dihydroxy-3,5,6-trimethylbenzoate
529
,
e.g. mortivinacin A
5210
and nicotinic acid (C
5
H
4
N - COOH) were ex-
tracted from fungus
Mortierella vinacea
of a solid-substrate fermentation
culture. The resorcinol derivatives
529
and
5210
produces ca. 30-mm zones
of inhibition in 48-h disk assays against
Fusarium verticillioides
by using
a 250
gdisk
-1
. Nicotinic acid caused a similar-sized zone of reduced growth
at the above level. The resorcinol derivatives
529
and
5210
also showed
antibacterial activities (10- to 15-mm zones of inhibition) in the standard
disk assays against
Bacillus subtilis
and
Staphylococcus aureus
by using
a 100
µ
gdisk
-1
[57].
µ
6
Steroids
Steroids are compounds that contain a cyclopenta[
]-phenathrene ring skele-
ton which when fully hydrogenated, is called gonan or steran
611
[60]. The
α
Table 14
Steroids
Compound
Living thing
Refs.
Species
6.1Epidioxysterol
5-
α
,8
α
-Epidioxycholest-6-en-3
β
-ol
612
Palauan marine sponge
[23]
Lendenfeldia chondrodes
6.2 Seco-steroids and Tetraene Steroids
12
α
-Actoxy-13,17-
seco
-chlolesta-
Octocoral
[61]
1,4-diene-3-ones
621
Dendronephthya
sp.
3-Methoxy-19-norpregna-1.3,5(10),
octocoral
[62]
20-tetraene
622
Alcyonium gracillimum
6.3 Steroid Lycosides
∆
9(11)
3
β
,6
α
-Diydroxysteroidal
Starfish
[63]
aglycon
631
Henricia downeyae
6.4 Muricins
Muricins-1
Pacific gorgonians
[64]
Aglycone pregana-5, 20-dien-3
β
-ol
641
Muricea californica
Muricea fruticosa
6.5 Steroidal Sulfated Glycosides
Steroidal sulfated glycosides
Starfish
[65]
(Asterosaponins)
Goniopectenosides A
651
Goniopecten demonstrans