Environmental Engineering Reference
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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
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