VOLATILE OR SEMI-VOLATILE NATURAL ANTIOXIDANTS SOURCED FROM A COMESTIBLE BYPRODUCT
A method of obtaining a volatile or semi-volatile natural antioxidant by toasting a comestible byproduct, natural antioxidants obtained by toasting the comestible byproduct, and packaging films incorporating such natural antioxidants are described herein.
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10 . A packaging film including a volatile or semi-volatile natural antioxidant sourced from a toasted comestible byproduct, the packaging film comprising:
a flexible packaging film having an amount of a natural antioxidant sourced from a toasted comestible byproduct; and
the natural antioxidant including a 4,6-substituted 2-methoxy phenol or derivative thereof.
11 . The packaging film of claim 10 , wherein the 4,6-substitution is selected from hydrogen, a methoxy group, a methyl group, a vinyl group, and combinations thereof.
12 . The packaging film of claim 11 , wherein the natural antioxidant is selected from 2-methoxy-4-methylphenol, 2-methoxyphenol, 2,6-dimethoxyl-4-vinylphenol, substituted vinyl phenols, derivatives thereof, and combinations thereof.
13 . The packaging film of claim 10 , wherein the natural antioxidant is obtained from toasting a phenolic-acid and/or polyphenolic containing comestible byproduct.
14 . The packaging film of claim 13 , wherein the polyphenolic and/or phenolic-acid containing comestible byproduct is selected from canola meal, wheat bran, pomace, straw, coffee, coffee beans, coffee fruit, roast and ground coffee, spent coffee grounds, and combinations thereof.
15 . The packaging film of claim 13 , wherein the toasting includes dry heating at atmospheric pressure for about 10 minutes to about 20 minutes at about 165° C. to about 250° C., optionally under an inert gas purge.
16 . The packaging film of claim 10 , wherein the flexible packaging film includes polyethylene, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate (EVA), polypropylene, polylactic acid (PLA), metalocene, polybutylene, and mixtures thereof.
17 . The packaging film of claim 10 , wherein the flexible packaging film is a multi-layer film and wherein one of the layers includes the amount of the natural antioxidant.
18 . The packaging film of claim 17 , wherein another of the layers in the multi-layer film is a barrier layer selected from high density polyethylene (HDPE), polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (EVOH), and combinations thereof.
19 . The packaging film of claim 10 , wherein the amount of the natural antioxidant in the packaging film limits the amount of hexanal formation from a food source prone to oxidation to less than about 3 ppm after 12 weeks of storage at about 90 to about 101° F.
20 . A volatile or semi-volatile natural antioxidant obtained from a toasted comestible byproduct, the volatile or semi-volatile natural antioxidant comprising a compound of Formula I
wherein R 1 and R 2 are independently selected from a hydrogen, an alkoxy group, an alkyl group having C1 to C6 carbon atoms, and a C2 to C6 hydrocarbyl group including one or more vinyl carbons therein.
21 . The volatile or semi-volatile natural antioxidant of claim 20 ,
wherein the volatile or semi-volatile natural antioxidant has a vapor pressure of about 0.0005 mm Hg at 25° C. to about 0.5 mm Hg at 25° C.
22 . The volatile or semi-volatile natural antioxidant of claim 20 ,
wherein R 1 is hydrogen and R 2 is a methyl group.
23 . The volatile or semi-volatile natural antioxidant of claim 20 ,
wherein R 1 is a methoxy group and R 2 is a C2 vinyl group.
24 . The volatile or semi-volatile natural antioxidant of claim 20 ,
wherein R 1 is hydrogen and R 2 is a C2 vinyl group.
25 . The volatile or semi-volatile natural antioxidant of claim 20 ,
wherein the compound of Formula I is derived from a toasted phenolic-acid or polyphenolic containing comestible byproduct.
26 . The volatile or semi-volatile natural antioxidant of claim 25 ,
wherein the phenolic-acid or polyphenolic containing comestible byproduct is selected from canola meal, wheat bran, pomace, straw, coffee, coffee beans, coffee fruit, roast and ground coffee, spent coffee grounds, and combinations thereof.