Granted Patent
B2
US 12,571,012 · App. 18/534,335 · Granted Mar 10, 2026
Polyhydroxyalkanoic acid compositions and methods for generating same
Assignee:
NEWLIGHT TECHNOLOGIES, INC.
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Abstract
Embodiments of the invention relate to the microbial production of polyhydroxyalkanoic acids, or polyhydroxyalkanoates (PHA), from substrates which cannot be used as a source of carbon and/or energy for microbial growth or PHA synthesis and which have microbial and environmental toxicity. According to one embodiment of the invention, a process for the production of PHA is provided wherein an enzyme such as methane monooxygenase is used to convert volatile organic compounds into PHA through the use of microorganisms that are unable to use volatile organic compounds as a source of carbon for growth or PHA production.
Claims (26)
1 . A polyhydroxyalkanoate (PHA) composition comprising:
(a) a polyhydroxyalkanoate,
(b) cell components from one or more methane-monooxygenase (MMO) microorganisms (MMO-microorganisms) that use MMO to catalyze oxidation of organic compounds, and
(c) one or more PHA-synthesizing microorganisms, wherein
said one or more MMO-microorganisms are capable of oxidizing volatile organic compounds (VOCs) into MMO-oxidized forms of the VOCs,
said one or more PHA-synthesizing microorganisms are capable of using the MMO-oxidized forms of the VOCs as a source of carbon for PHA production, and wherein
said one or more MMO-microorganisms and said one or more PHA-synthesizing microorganisms are different microorganisms.
2 . The PHA composition of claim 1 , wherein said one or more PHA-synthesizing microorganisms are genetically engineered.
3 . The PHA composition of claim 2 , wherein said one or more VOCs inhibit growth of said genetically engineered microorganisms by temporarily or permanently deactivating said one or more MMO-microorganisms.
4 . The PHA composition of claim 1 , wherein said one or more PHA-synthesizing microorganisms are selected from one or more genera selected from a group consisting of: Alcaligenes, Acidovorax, Azotobacter, Bacillus, Brevibacillus, Pseudomonas, Ralstonia, Rhizobium , and Rhodobacter.
5 . The PHA composition of claim 1 , further comprising one or more of: potassium, phosphorus, nitrogen, magnesium, sulfate, iron, cobalt, copper, dissolved oxygen, dissolved methane, dissolved VOCs, zinc, sodium, nickel, manganese, boron, water, microorganisms, and organic metabolites.
6 . The PHA composition of claim 1 , further comprising depletion of one or more of: potassium, phosphorus, nitrogen, magnesium, sulfate, iron, cobalt, copper, dissolved oxygen, dissolved methane, dissolved VOCs, zinc, sodium, nickel, manganese, boron, water, microorganisms, and organic metabolites, from the PHA composition causes or allows said one or more PHA-synthesizing microorganisms to produce PHA.
7 . The PHA composition of claim 2 , wherein said genetically engineered microorganisms include bacteria, yeast, or fungi.
8 . The PHA composition of claim 2 , wherein said one or more VOCs inhibit growth of said genetically engineered microorganisms by exhibiting bactericidal or bacteriostatic activity.
9 . The PHA composition of claim 1 , further comprising a carbon backbone wherein at least one carbon of said carbon backbone is derived from a non-methane organic.
10 . The PHA composition of claim 9 , wherein said non-methane organic compound is a volatile organic compound.
11 . The PHA composition of claim 10 , wherein said VOCs are selected from a group consisting of highly evaporative, carbon-based chemical substances; chemical compounds that are gases at room temperature and contain carbon; and/or compounds comprising carbon which participate in atmospheric photochemical reactions.
12 . The PHA composition of claim 10 , wherein said VOCs are selected from a group consisting of hydrocarbons, halocarbons, and oxygenates.
13 . The PHA composition of claim 10 , wherein said VOCs are selected from a group consisting of: methylene chloride (dichloromethane); ethane; 1,1,1-trichloroethane (methyl chloroform); 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113); trichlorofluoromethane (CFC-11); dichlorodifluoromethane (CFC-12); chlorodifluoromethane (HCFC-22); trifluoromethane (HFC-23); 1,2-dichloro 1,1,2,2-tetrafluoroethane (CFC-114); chloropentafluoroethane (CFC-115); 1,1,1-trifluoro 2,2-dichloroethane (HCFC-123); 1,1,1,2-tetrafluoroethane (HFC-134a); 1,1-dichloro 1-fluoroethane (HCFC-141b); 1-chloro 1,1-difluoroethane (HCFC-142b); 2-chloro-1,1,1,2-tetrafluoro ethane (HCFC-124); pentafluoroethane (HFC-125); 1,1,2,2-tetrafluoroethane (HFC-134); 1,1,1-trifluoroethane (HFC-143a); 1,1-difluoroethane (HFC-152a); parachlorobenzotrifluoride (PCBTF); cyclic, branched, or linear completely methylated siloxanes; acetone; perchloroethylene (tetrachloroethylene); propane; 3,3-dichloro-1,1,1,2,2-pentafluoropropane (HCFC-225ca); 1,3-dichloro-1,1,2,2,3-pentafluoropropane (HCFC-225cb); 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC 43-10mee); difluoromethane (HFC-32); ethylfluoride (HFC-161); 1,1,1,3,3,3-hexafluoropropane (HFC-236fa); 1,1,2,2,3-pentafluoropropane (HFC-245ca); 1,1,2,3,3-pentafluoropropane (HFC-245ea); 1,1,1,2,3-pentafluoropropane (HFC-245eb); 1,1,1,3,3-pentafluoropropane (HFC-245fa); 1,1,1,2,3,3-hexafluoropropane (HFC-236ea); 1,1,1,3,3-pentafluorobutane (HFC-365mfc); chlorofluoromethane (HCFC-31); 1 chloro-1-fluoroethane (HCFC-151a); 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a); butane; 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-butane (C4F9OCH3); 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OCH3); 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane (C4F9OC2H5); 2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OC2H5); methyl acetate and perfluorocarbon compounds which fall into these classes: (i) cyclic, branched, or linear, completely fluorinated alkanes; (ii) cyclic, branched, or linear, completely fluorinated ethers with no unsaturations; (iii) cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations; and (iv) sulfur containing perfluorocarbons with no unsaturations and with sulfur bonds only to carbon and fluorine.
14 . The PHA composition of claim 1 , wherein PHA is produced in a quantity or concentration in a range of 0.25-0.75 kg PHA per 1 kg VOC.
15 . The PHA composition of claim 1 , wherein PHA comprises 1-75% of PHA-synthesizing microorganisms by weight.
16 . The PHA composition of claim 1 , wherein PHA comprises a mass or density ratio produced to VOCs added is 1:10, 1:8, 1:6, 1:4, 1:2, or 1:1.
17 . The PHA composition of claim 1 , wherein PHA comprises a mass or density ratio produced to microorganisms added is 1:100, 1:75, 1:50, 1:25, 1:10, 1:5, 1:2, or 1:1.
18 . The PHA composition of claim 1 , wherein said VOCs comprise one or more of: vinyl chloride, benzene, butane, trichloroethylene, toluene, ethylbenzene, dichloromethane, trichloromethane, ethane, 1-2-dichloroethane, 1,1-dichloroethylene, chlorodifluoromethane, xylene, and/or other volatile organic compounds.
19 . The PHA composition of claim 1 , wherein said MMO-microorganisms include one or more of: Bacillus, Mycobacterium, Actinomyces, Nocardia, Pseudomonas, Methanomonas, Protaminobacter, Methylococcus, Arthrobacter, Brevibacterium, Acetobacter, Methylomonas, Acetobacter, Micrococcus, Rhodopseudomonas, Corynebacterium, Rhodopseudomonas, Microbacterium, Achromobacter, Methylobacter, Methylosinus , and Methylocystis.
20 . The PHA composition of claim 1 , wherein PHA is selected from a group consisting of polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), polyhydroxybutyrate-covalerate (PHBV), and polyhydroxyhexanoate (PHHx).
Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 13, 2024
From: HERREMA, MARKUS DONALD; KIMMEL, KENTON
To: HERREMA-KIMMEL, LLC
Reel/Frame 069254/0216 →
MERGER
Recorded Nov 13, 2024
From: HERREMA-KIMMEL, LLC
To: NEWLIGHT TECHNOLOGIES, LLC
Reel/Frame 069254/0238 →
CHANGE OF NAME
Recorded Nov 13, 2024
From: NEWLIGHT TECHNOLOGIES, LLC
To: NEWLIGHT TECHNOLOGIES, INC.
Reel/Frame 069356/0590 →
Continuity (9)
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