Among the types of genes involved in the degradation of grass polysaccharides, CE 1 feruloyl
esterases (FAE) (EC 220.127.116.11) are absent in the genomes of P.
(2006) Enzymatic saccharification of wheat straw for bioethanol production by a combined cellulase xylanase and feruloyl
The newly developed process incorporates ferulie acid into soybean oil, producing water- resistant feruloyl
soy gylcerides capable of absorbing UVA and LWB light.
Scientists have developed a new method for converting soybean oil into a highly effective bio-based sunscreen active ingredient, called feruloyl
soy glycerides (FSG), which does not carry the potential health concerns of ingredients in some existing sunscreens.
These cross-links involve oxidative coupling of polysaccharides and glycoproteins by phenollic groups of feruloyl
or p-coumaroyl or isodityrosine bridges, and of the monolignols (Cassab & Varner 1988).
Xylanases (endo-1,4-beta-xylanase; EC 18.104.22.168) are glycosidases which randomly cleave internal [beta]-1,4-D-xylosidic linkages of xylan , a bioheteropolymer consisting of D-xylose homopolymer backbone that can be substituted to diverse degrees with glucuronosyl, 4-O-methyl-D-glucuronopyranosyl, [alpha]-L-arabinofuranosyl, acetyl, feruloyl
, and/or p-coumaroyl residues and is one of the most abundant polysaccharides in nature [5-7].
The signal around 1720 [cm.sup.-1] corresponding to the C=O functional group is a characteristic peak of ester-linked acetyl, feruloyl
, and [rho]-coumaroyl groups between hemicelluloses and lignin .
Xylan degrading enzymes include those that degrade the main chain which are endo-[beta]-1,4-xylanase (EC 22.214.171.124) and [beta]-xylosidase (EC 126.96.36.199); and side chain-cleaving enzymes that include [alpha]-glucuronidase (EC 188.8.131.52), [alpha]-L-arabinofuranosidase (EC 184.108.40.206), acetylxylan esterase (EC 220.127.116.11) and feruloyl
esterase (18.104.22.168) (Biely 1985; Biely 2003; Ryabovaa et al.
Ruel et al., "Redirection of the phenylpropanoid pathway to feruloyl
malate in Arabidopsis mutants deficient for cinnamoyl-CoA reductase 1," Planta, vol.
However, contradictory results had also been reported for free curcumin solution which exhibited a prominent peak at 350 nm and was attributed to the n-[[pi].sup.*] transition of the feruloyl
unit of curcumin [21, 22].
esterases can cleave diferulate cross-links in soluble xylans or simple model substrates (Faulds et al., 2003: Garcia-Conesa et al., 1999a), there is no evidence that these enzymes break a significant proportion of cross-links within lignified cell walls: therefore, they are currently of limited value for improving cell wall degradability.