25 research outputs found
Effect of Drying Mode of Bacterial Biomass on the Effectiveness of Extraction and Physicochemical Properties of the Product (Polymer)
ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅ΠΆΠΈΠΌΠΎΠ² Π²ΡΡΡΡΠΈΠ²Π°Π½ΠΈΡ Π±ΠΈΠΎΠΌΠ°ΡΡΡ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ Cupriavidus eutrophus Π10646. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΡΠ΅ΠΆΠΈΠΌΡ ΠΎΠΊΠ°Π·ΡΠ²Π°ΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° Π²ΡΡ
ΠΎΠ΄ ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΄ΡΠΊΡΠ° (ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°) ΠΈ Π΅Π³ΠΎ ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° (ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-ΠΌΠ°ΡΡΠΎΠ²ΡΠ΅ ΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ). ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΡΠΎΠΊΠΈΡ
ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ Π΄Π΅Π³ΡΠ°Π΄Π°ΡΠΈΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ° ΠΈ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ Π΅Π³ΠΎ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠΉ ΠΌΠ°ΡΡΡ. ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΡΠ±Π»ΠΈΠΌΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΡΡΠΊΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠΈΡΡ ΡΡΡ
Π»ΡΡ Π±ΠΈΠΎΠΌΠ°ΡΡΡ Ρ Π΄ΠΎΠ²ΠΎΠ»ΡΠ½ΠΎ ΡΠ°Π·Π²ΠΈΡΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡΡ, ΡΡΠΎ Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅ΡΡΡ Π½Π° ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ ΠΈ Π½Π΅ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-ΠΌΠ°ΡΡΠΎΠ²ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°Comparative study of different drying modes of bacterial biomass of Cupriavidus eutrophus Π10646 was conducted. Different modes differently affect the yield of the product (polymer) and its physicochemical properties (molecular weight distribution and temperature characteristics). High temperatures caused the polymer degradation and decrease of its molecular weight. Using freeze drying allows to obtain friable biomass with an extended surface which is favorable for extraction process and to preserve the molecular weight characteristics of the polyme
Isolation and Purification of Polyhydroxyalkanoates. Scaling in Pilot Production
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ ΠΏΡΠΎΡΠ΅ΡΡ Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ ΠΈ ΠΎΡΠΈΡΡΠΊΠΈ ΠΏΠΎΠ»ΠΈβ3-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ±ΡΡΠΈΡΠ°ΡΠ° Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΌΠ°ΡΡΡΠ°Π±ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠΎΠ»ΡΠ±ΠΈΠ»ΠΈΠ·ΠΈΡΡΡΡΠΈΡ
Π°Π³Π΅Π½ΡΠΎΠ² ΠΈΠ·ΡΡΠ΅Π½Ρ Π΄ΠΎΠ΄Π΅ΡΠΈΠ»ΡΡΠ»ΡΡΠ°Ρ Π½Π°ΡΡΠΈΡ,
Π³ΠΈΠΏΠΎΡ
Π»ΠΎΡΠΈΡ Π½Π°ΡΡΠΈΡ ΠΈ ΡΡΠΈΡΠ°Π»ΡΠ½ΡΠΉ ΠΏΠΎΡΠΎΡΠΎΠΊ Β«ΠΠ΅ΠΌΠΎΡΒ». ΠΠ°ΠΈΠ±ΠΎΠ»ΡΡΠΈΠΉ Π²ΡΡ
ΠΎΠ΄ 95 %, ΠΈ ΡΠΈΡΡΠΎΡΠ° ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°
99,5 % Π΄ΠΎΡΡΠΈΠ³Π½ΡΡ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ Π΄Π²ΡΡ
ΡΡΠ°Π΄ΠΈΠΉΠ½ΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π° ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ ΠΈ ΠΏΠΎΡΠΎΡΠΊΠ° Β«ΠΠ΅ΠΌΠΎΡΒ»
Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠΎΠ»ΡΠ±ΠΈΠ»ΠΈΠ·ΠΈΡΡΡΡΠ΅Π³ΠΎ Π°Π³Π΅Π½ΡΠ°. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΡΠ΅Π³ΠΎ ΡΠ΄Π°Π»ΠΎΡΡ ΡΠ½ΠΈΠ·ΠΈΡΡ Π·Π°ΡΡΠ°ΡΡ Π½Π° ΡΡΠ°Π΄ΠΈΠΈ
ΡΠΎΠ»ΡΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ Π΄ΠΎ 31 ΡΡΠ±/ΠΊΠ³ ΠΏΠΎΠ»ΠΈβ3-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ±ΡΡΠΈΡΠ°ΡΠ°. ΠΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ°ΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π²Π½Π΅ΡΠ΅Π½Ρ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΠ½ΡΡ ΠΈ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΡΡ ΡΡ
Π΅ΠΌΡ ΠΏΡΠΎΡΠ΅ΡΡΠ°The process of isolating and purifying polyβ3-hydroxybutyrate under scaling conditions has been studied. Sodium dodecyl sulfate, sodium hypochlorite and Pemos washing powder were studied as solubilizing agents. The highest yield of 95 % and polymer purity of 99.5 % was achieved using a two- stage extraction method and Pemos powder as a solubilizing agent. As a result, it was possible to reduce the costs at the solubilization stage to 31 rubles/kg of polyβ3-hydroxybutyrate. Based on the research results, a technology for the isolation and purification of polyhydroxyalkanoates was propose
Waste Fish Oil is a Promising Substrate for the Synthesis of Target Products of Biotechnology
ΠΠΈΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠΉ ΠΈΠ· ΠΎΡΡ
ΠΎΠ΄ΠΎΠ² ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΠΊΠΎΠ½ΡΠ΅ΡΠ²ΠΎΠ² ΠΏΡΠΈΠ±Π°Π»ΡΠΈΠΉΡΠΊΠΎΠΉ ΠΊΠΈΠ»ΡΠΊΠΈ (Sprattus
sprattus), Π²ΠΏΠ΅ΡΠ²ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ³Π»Π΅ΡΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΡΠ±ΡΡΡΠ°ΡΠ° Π΄Π»Ρ ΡΠΈΠ½ΡΠ΅Π·Π° Π±Π΅Π»ΠΊΠ° ΠΎΠ΄Π½ΠΎΠΊΠ»Π΅ΡΠΎΡΠ½ΡΡ
ΠΈ ΡΠ°Π·ΡΡΡΠ°Π΅ΠΌΡΡ
Π±ΠΈΠΎΠΏΠ»Π°ΡΡΠΈΠΊΠΎΠ² ΠΏΠΎΠ»ΠΈΠ³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ°Π»ΠΊΠ°Π½ΠΎΠ°ΡΠΎΠ² (ΠΠΠ) Π² ΠΊΡΠ»ΡΡΡΡΠ΅ ΡΡΠ΅Ρ
ΡΡΠ°ΠΌΠΌΠΎΠ² Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ:
Cupriavidus necator Bβ5786, C. necator Bβ8562, C. necator Bβ10646. Π ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΠΎΠΌ ΠΆΠΈΡΠ΅ ΠΎΠ±ΡΠΈΠ΅
Π»ΠΈΠΏΠΈΠ΄Ρ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΈ 95 %, Π±Π΅Π»ΠΎΠΊ ΠΈ ΡΠ³Π»Π΅Π²ΠΎΠ΄Ρ 4 ΠΈ 1 % ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ; Π² ΡΠΎΡΡΠ°Π²Π΅ ΠΆΠΈΡΠ½ΡΡ
ΠΊΠΈΡΠ»ΠΎΡ
(ΠΠ) Π»ΠΈΠΏΠΈΠ΄ΠΎΠ² ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½ΠΎ 16 ΠΆΠΈΡΠ½ΡΡ
ΠΊΠΈΡΠ»ΠΎΡ Ρ Π΄ΠΎΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΠ°Π»ΡΠΌΠΈΡΠΈΠ½ΠΎΠ²ΠΎΠΉ (28,0 %
ΠΎΡ ΡΡΠΌΠΌΡ ΠΠ), ΠΎΠ»Π΅ΠΈΠ½ΠΎΠ²ΠΎΠΉ (25,3 % ΠΎΡ ΡΡΠΌΠΌΡ ΠΠ), Π΄ΠΎΠΊΠΎΠ·Π°Π³Π΅ΠΊΡΠ°Π΅Π½ΠΎΠ²ΠΎΠΉ (16,7 % ΠΎΡ ΡΡΠΌΠΌΡ ΠΠ)
ΠΊΠΈΡΠ»ΠΎΡ. ΠΡΠΈ Π²Π°ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΅ΠΆΠΈΠΌΠΎΠ² Π²ΡΡΠ°ΡΠΈΠ²Π°Π½ΠΈΡ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ ΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π°Π·ΠΎΡΠ°
Π² ΡΡΠ΅Π΄Π΅ ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠΈΠ½ΡΠ΅Π·Π° Π±Π΅Π»ΠΊΠΎΠ²ΠΎΠΉ Π±ΠΈΠΎΠΌΠ°ΡΡΡ ΠΈΠ»ΠΈ ΡΠ΅Π·Π΅ΡΠ²Π½ΡΡ
ΠΠΠ. ΠΠ° ΠΏΠΎΠ»Π½ΠΎΠΉ ΡΡΠ΅Π΄Π΅
Π²ΡΠ΅ ΡΡΠ°ΠΌΠΌΡ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΡΡΡ Π²ΡΡΠΎΠΊΠΎΠ±Π΅Π»ΠΊΠΎΠ²ΡΡ Π±ΠΈΠΎΠΌΠ°ΡΡΡ Ρ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Β«ΡΡΡΠΎΠ³ΠΎΒ» ΠΏΡΠΎΡΠ΅ΠΈΠ½Π° ΠΈ Π±Π΅Π»ΠΊΠ°
Π½Π΅ ΠΌΠ΅Π½Π΅Π΅ 70 ΠΈ 50 % ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ Ρ ΠΏΠΎΠ»Π½ΡΠΌ Π½Π°Π±ΠΎΡΠΎΠΌ Π°ΠΌΠΈΠ½ΠΎΠΊΠΈΡΠ»ΠΎΡ, Π²ΠΊΠ»ΡΡΠ°Ρ Π½Π΅Π·Π°ΠΌΠ΅Π½ΠΈΠΌΡΠ΅.
ΠΡΠΈ Π»ΠΈΠΌΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠΎΡΡΠ΅ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ ΠΏΠΎ Π°Π·ΠΎΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ Π²ΡΡΠΎΠΊΠΈΠ΅ (Π΄ΠΎ 60β70 %) Π²ΡΡ
ΠΎΠ΄Ρ ΠΠΠ,
ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΡΠ΅ 3-Ρ
ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ½ΡΠΌΠΈ ΡΠΎΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°ΠΌΠΈ ΠΏΠΎΠ»ΠΈ(3-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ±ΡΡΠΈΡΠ°Ρ-ΡΠΎβ3-
Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ²Π°Π»Π΅ΡΠ°Ρ-ΡΠΎβ3-
Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ³Π΅ΠΊΡΠ°Π½ΠΎΠ°Ρ) (Π(3ΠΠβΡΠΎβ3ΠΠβΡΠΎβ3ΠΠ)) Ρ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ 3ΠΠ ΠΈ 3ΠΠ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ
0,20β0,31 ΠΈ 0,04β0,07 ΠΌΠΎΠ».% ΠΈ ΡΠΎ Π·Π½Π°ΡΠ΅Π½ΠΈΡΠΌΠΈ ΡΡΠ΅Π΄Π½Π΅Π²Π΅ΡΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠΉ ΠΌΠ°ΡΡΡ Π½Π΅ Π½ΠΈΠΆΠ΅
600 ΠΊΠΠ° ΠΈ ΡΡΠ΅ΠΏΠ΅Π½ΡΡ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΡΡΠ΄ΠΊΠ° 70 %. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π½ΡΠΉ ΠΆΠΈΡΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠΉ ΠΎΡΡ
ΠΎΠ΄
ΡΡΠ±ΠΎΠΏΠ΅ΡΠ΅ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΌΠΎΠΆΠ½ΠΎ ΠΎΡΠ½Π΅ΡΡΠΈ ΠΊ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΌΡ Π²ΠΎΠ·ΠΎΠ±Π½ΠΎΠ²Π»ΡΠ΅ΠΌΠΎΠΌΡ ΠΈ Π΄ΠΎΡΡΡΠΏΠ½ΠΎΠΌΡ ΡΡΠ±ΡΡΡΠ°ΡΡ Π΄Π»Ρ
Π±ΠΈΠΎΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π±Π΅Π»ΠΊΠ° ΠΎΠ΄Π½ΠΎΠΊΠ»Π΅ΡΠΎΡΠ½ΡΡ
ΠΈ Π±ΠΈΠΎΡΠ°Π·ΡΡΡΠ°Π΅ΠΌΡΡ
Β«Π·Π΅Π»Π΅Π½ΡΡ
Β» ΠΏΠ»Π°ΡΡΠΈΠΊΠΎΠ²Fat derived from the waste of the Baltic sprat (Sprattus sprattus) canning industry was studied as a carbon substrate for the synthesis of single cell protein and degradable bioplastics, polyhydroxyalkanoates (PHAs), in the culture of three bacterial strains: Cupriavidus necator Bβ5786, C. necator Bβ8562, and C. necator Bβ10646. The fatty substrate used in the present study contained 95 % of total lipids, 4 % of proteins, and 1 % of carbohydrates. Sixteen fatty acids (FAs) of lipids were identified, with palmitic (28.0 %), oleic (25.3 %), and docosahexaenoic (16.7 %) acids prevailing. The modes of cell cultivation were varied and the concentration of nitrogen in the medium was changed to direct metabolism towards synthesis of single cell protein or reserve PHAs. On complete nutrient medium, all strains synthesized high- protein biomass containing at least 70 and 50 % of βcrudeβ protein and protein, respectively, which were complete in amino acids, including essential ones. When bacterial growth was limited by nitrogen, high (up to 60β70 %) yields of PHAs were obtained. The PHAs were represented by 3-component copolymers poly(3-hydroxybutyrtae-coβ3-hydroxyvalerate-coβ3-hydroxyhaxanoate) (P(3HBβcoβ3HVβcoβ3HHx)) with 0.20β0.31 mol.% of 3HV and 0.04β0.07 mol.% of 3HHx and with a weight average molecular weight of at least 600 kDa and a degree of crystallinity of about 70 %. Based on these parameters, the fat- containing waste of the canning industry can be regarded as a promising renewable substrate for the biotechnological production of single cell protein and biodegradable βgreenβ plastics β polyhydroxyalkanoate
Sugar Beet Molasses as a Potential C-Substrate for PHA Production by Cupriavidus necator
To increase the availability and expand the raw material base, the production of polyhydroxyalkanoates (PHA) by the wild strain Cupriavidus necator B-10646 on hydrolysates of sugar beet molasses was studied. The hydrolysis of molasses was carried out using β-fructofuranosidase, which provides a high conversion of sucrose (88.9%) to hexoses. We showed the necessity to adjust the chemical composition of molasses hydrolysate to balance with the physiological needs of C. necator B-10646 and reduce excess sugars and nitrogen and eliminate phosphorus deficiency. The modes of cultivation of bacteria on diluted hydrolyzed molasses with the controlled feeding of phosphorus and glucose were implemented. Depending on the ratio of sugars introduced into the bacterial culture due to the molasses hydrolysate and glucose additions, the bacterial biomass concentration was obtained from 20–25 to 80–85 g/L with a polymer content up to 80%. The hydrolysates of molasses containing trace amounts of propionate and valerate were used to synthesize a P(3HB-co-3HV) copolymer with minor inclusions of 3-hydroxyvlaerate monomers. The introduction of precursors into the medium ensured the synthesis of copolymers with reduced values of the degree of crystallinity, containing, in addition to 3HB, monomers 3HB, 4HB, or 3HHx in an amount of 12–16 mol.%
Comparative Study of Methods of Pha Extraction from Bacterial Biomass
ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ ΠΏΠΎΠ»ΠΈΠ³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ°Π»ΠΊΠ°Π½ΠΎΠ°ΡΠΎΠ²
(ΠΠΠ) ΠΈΠ· Π±ΠΈΠΎΠΌΠ°ΡΡΡ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΡΠ΅Π°Π³Π΅Π½ΡΡ ΠΈ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ Π²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ°
ΠΏΠΎ-ΡΠ°Π·Π½ΠΎΠΌΡ Π²Π»ΠΈΡΡΡ Π½Π° ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ β ΠΏΠΎΠ»Π½ΠΎΡΡ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ° ΠΈ ΡΡΠ΅ΠΏΠ΅Π½Ρ Π΅Π³ΠΎ ΡΠΈΡΡΠΎΡΡ.
ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Ρ
Π»ΠΎΡΠΎΡΠΎΡΠΌΠ° Π΄Π΅Π»Π°Π΅Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π±ΠΎΠ»ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π»Π΅ΡΡΡΠΈΡ
ΠΈ ΡΠΎΠΊΡΠΈΡΠ½ΡΡ
ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ². ΠΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½Π° ΠΏΠΎΠ»Π½ΠΎΡΠ° ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ²ΡΡΠ°Π΅ΡΡΡ, Π½ΠΎ
Π²ΠΎΠ·Π½ΠΈΠΊΠ°Π΅Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ Π² ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΡΠ΅Π΄ΡΡΡ ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΌΠ΅ΡΠΈ Β«ΡΠΊΡΡΡΠ°Π³Π΅Π½Ρ β ΠΎΡΠ°Π΄ΠΈΡΠ΅Π»ΡΒ».
ΠΠΎΠ΄ΠΎΠ±ΡΠ°Π½Π° ΠΏΠ°ΡΠ° Β«ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Ρ β ΠΎΡΠ°Π΄ΠΈΡΠ΅Π»ΡΒ» (Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ β Π³Π΅ΠΊΡΠ°Π½), ΠΊΠΎΡΠΎΡΠ°Ρ Π½Π΅ ΠΎΠ±ΡΠ°Π·ΡΠ΅Ρ
ΠΌΠ΅ΠΆΠ΄Ρ ΡΠΎΠ±ΠΎΠΉ Π°Π·Π΅ΠΎΡΡΠΎΠΏΠ½ΡΡ ΡΠΌΠ΅ΡΡ, ΡΡΠΎ Π΄Π΅Π»Π°Π΅Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠΌ Π²Π΅ΡΠ½ΡΡΡ Π² ΠΏΡΠΎΡΠ΅ΡΡ Π΄ΠΎ 90 % ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ².
Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΡΠ½ΠΈΠ·ΠΈΠ»ΡΡ ΡΠ°ΡΡ
ΠΎΠ΄ ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Π΅ΠΉ Ρ 73,5 ΠΊΠ³/ΠΊΠ³ ΠΠΠ (Ρ
Π»ΠΎΡΠΎΡΠΎΡΠΌ β Π³Π΅ΠΊΡΠ°Π½) Π΄ΠΎ 63,7
ΠΊΠ³/ΠΊΠ³ ΠΠΠ (Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ β ΡΡΠ°Π½ΠΎΠ» β Π³Π΅ΠΊΡΠ°Π½). ΠΡΠΈ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠΈ ΠΈΠ· ΡΠΎΡΡΠ°Π²Π° ΡΡΠ°Π½ΠΎΠ»Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ
ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΠ΅ ΡΠ°ΡΡ
ΠΎΠ΄Π° Π΄ΠΎ 7,8 Π³/Π³ ΠΠΠ, Π½ΠΎ Π² ΡΡΠΎΠΌ ΡΠ»ΡΡΠ°Π΅ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠ° Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ°
Π±ΠΈΠΎΠΌΠ°ΡΡΡ Ρ ΡΠ΅Π»ΡΡ ΡΠ°Π·ΡΡΡΠ΅Π½ΠΈΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΡΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ² ΠΈΠ»ΠΈ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½Π°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ°
ΡΠ½Π°ΡΠ°Π»Π° ΡΠΏΠΈΡΡΠΎΠΌ, Π° Π·Π°ΡΠ΅ΠΌ Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ΠΎΠΌ. ΠΠ΅Π·ΡΠ΅Π°Π³Π΅Π½ΡΠ½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅
Π΄Π΅ΡΠ΅ΡΠ³Π΅Π½ΡΠ° Π΄ΠΎΠ΄Π΅ΡΠΈΠ»ΡΡΠ»ΡΡΠ°ΡΠ° Π½Π°ΡΡΠΈΡ (ΠΠΠ‘-Na) ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π±ΠΎΠ»Π΅Π΅ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ½ΡΠΌ ΡΠΏΠΎΡΠΎΠ±ΠΎΠΌ
ΠΏΠΎΠ»ΡΡΠ°ΡΡ Π²ΡΡΠΎΠΊΠΈΠ΅ Π²ΡΡ
ΠΎΠ΄Ρ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°, Π½Π΅ Π·Π°Π³ΡΡΠ·Π½Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅ΡΡΠΌΠΈ ΠΆΠΈΡΠ½ΡΡ
ΠΊΠΈΡΠ»ΠΎΡ, ΠΏΡΠΈΠ³ΠΎΠ΄Π½ΠΎΠ³ΠΎ
Π΄Π»Ρ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Π»Π΅ΠΉ (ΡΠ°ΡΠ°, ΡΠΏΠ°ΠΊΠΎΠ²ΠΎΡΠ½Π°Ρ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΡ). Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄,
ΠΊΠΎΡΠΎΡΡΠΉ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠ½ΠΈΠΆΠ°Π΅Ρ ΡΠ°ΡΡ
ΠΎΠ΄Ρ ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ² ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠ°ΡΡ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ Π²ΡΡΠΎΠΊΠΎΠΉ
ΡΠΈΡΡΠΎΡΡ ΠΏΡΠΈ ΠΏΠΎΠ»Π½ΠΎΡΠ΅ ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ Π΄ΠΎ 98,5β99,0 %A comparative study of different methods of PHA extraction from the biomass of bacteria was carried
out. It was shown that different reagents and process technologies have different effects on the
extraction results β the completeness of polymer extraction and degree of its purity. Application of
chloroform requires the use of large amounts of volatile and toxic reagents. When dichloromethane
is used, the completeness of extraction increases, but it becomes necessary to implement procedures
for separating the βextractant-precipitatorβ mixture. The solvent-precipitator pair (dichloromethanehexane)
was selected, which does not lead to formation of an azeotropic mixture, making it possible
to return up to 90 % of the reactants to the process. As a result, solvent consumption went down from
73.5 kg/kg of PHA (chloroform β hexane) to 63.7 kg/kg of PHA (chloroform β ethanol β hexane). If
ethanol is excluded, it is possible to reduce the consumption to 7.8 g/g of PHA, but in this case additional
treatment of biomass to destroy membrane complexes or sequential treatment first with alcohol and
then with dichloromethane is needed. A nonchemical method using sodium dodecyl sulfate (NaDS)
as a detergent allows for a more economical way to obtain high yields of polymer not contaminated
with admixtures of fatty acids and suitable for technical purposes (packaging, packaging products).
A combined method was developed, which considerably reduces the cost of reagents and makes it
possible to obtain polymers with high purity degree and extraction completeness up to 98.5β99.0
The Kinetics of Fungicide and Herbicide Release from Slow-Release Formulations Prepared from Degradable Poly-3- Hydroxybutyrate
ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠΈΠ½Π΅ΡΠΈΠΊΠΈ ΠΎΡΡΠΎΠΊΠ° ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² ΡΠ΅Π±ΡΠΊΠΎΠ½Π°Π·ΠΎΠ»Π° ΠΈ ΠΌΠ΅ΡΡΠΈΠ±ΡΠ·ΠΈΠ½Π° ΠΈΠ· ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
Π½ΠΎΡΠΈΡΠ΅Π»Π΅ΠΉ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΡ
ΠΈΠ· ΠΏΠΎΠ»ΠΈ-3-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ±ΡΡΠΈΡΠ°ΡΠ° ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΠΎΡΠΌΡ: Π³ΡΠ°Π½ΡΠ»Ρ, ΠΏΠ»Π΅Π½ΠΊΠΈ ΠΈ 3D-ΡΠΎΡΠΌΡ. ΠΡΡΠ²Π»Π΅Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ Π·Π°ΠΊΠΎΠ½ΠΎΠΌΠ΅ΡΠ½ΠΎΡΡΠΈ ΠΎΡΡΠΎΠΊΠ°, ΡΠ°ΡΡΡΠΈΡΠ°Π½Ρ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΊΠΎΠ½ΡΡΠ°Π½ΡΡ Π΄Π»Ρ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π²ΡΡ
ΠΎΠ΄Π° ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡΡΠ΄ΠΊΠ° ΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π₯ΠΈΠ³ΡΡΠΈRelease kinetics of the fungicide tebuconazole and the herbicide metribuzin from polymeric carriers was investigated. Carriers were prepared from poly-3- hydroxybutyrate as granules, films and 3D forms. The main mechanisms of pesticide release were discovered; kinetic constants for the first order model and Higuchi model were calculate
Comparative Study of Methods of Pha Extraction from Bacterial Biomass
ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ ΠΏΠΎΠ»ΠΈΠ³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ°Π»ΠΊΠ°Π½ΠΎΠ°ΡΠΎΠ²
(ΠΠΠ) ΠΈΠ· Π±ΠΈΠΎΠΌΠ°ΡΡΡ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΡΠ΅Π°Π³Π΅Π½ΡΡ ΠΈ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ Π²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ°
ΠΏΠΎ-ΡΠ°Π·Π½ΠΎΠΌΡ Π²Π»ΠΈΡΡΡ Π½Π° ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ β ΠΏΠΎΠ»Π½ΠΎΡΡ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ° ΠΈ ΡΡΠ΅ΠΏΠ΅Π½Ρ Π΅Π³ΠΎ ΡΠΈΡΡΠΎΡΡ.
ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Ρ
Π»ΠΎΡΠΎΡΠΎΡΠΌΠ° Π΄Π΅Π»Π°Π΅Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π±ΠΎΠ»ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π»Π΅ΡΡΡΠΈΡ
ΠΈ ΡΠΎΠΊΡΠΈΡΠ½ΡΡ
ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ². ΠΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½Π° ΠΏΠΎΠ»Π½ΠΎΡΠ° ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ²ΡΡΠ°Π΅ΡΡΡ, Π½ΠΎ
Π²ΠΎΠ·Π½ΠΈΠΊΠ°Π΅Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ Π² ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΡΠ΅Π΄ΡΡΡ ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΌΠ΅ΡΠΈ Β«ΡΠΊΡΡΡΠ°Π³Π΅Π½Ρ β ΠΎΡΠ°Π΄ΠΈΡΠ΅Π»ΡΒ».
ΠΠΎΠ΄ΠΎΠ±ΡΠ°Π½Π° ΠΏΠ°ΡΠ° Β«ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Ρ β ΠΎΡΠ°Π΄ΠΈΡΠ΅Π»ΡΒ» (Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ β Π³Π΅ΠΊΡΠ°Π½), ΠΊΠΎΡΠΎΡΠ°Ρ Π½Π΅ ΠΎΠ±ΡΠ°Π·ΡΠ΅Ρ
ΠΌΠ΅ΠΆΠ΄Ρ ΡΠΎΠ±ΠΎΠΉ Π°Π·Π΅ΠΎΡΡΠΎΠΏΠ½ΡΡ ΡΠΌΠ΅ΡΡ, ΡΡΠΎ Π΄Π΅Π»Π°Π΅Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠΌ Π²Π΅ΡΠ½ΡΡΡ Π² ΠΏΡΠΎΡΠ΅ΡΡ Π΄ΠΎ 90 % ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ².
Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΡΠ½ΠΈΠ·ΠΈΠ»ΡΡ ΡΠ°ΡΡ
ΠΎΠ΄ ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Π΅ΠΉ Ρ 73,5 ΠΊΠ³/ΠΊΠ³ ΠΠΠ (Ρ
Π»ΠΎΡΠΎΡΠΎΡΠΌ β Π³Π΅ΠΊΡΠ°Π½) Π΄ΠΎ 63,7
ΠΊΠ³/ΠΊΠ³ ΠΠΠ (Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ β ΡΡΠ°Π½ΠΎΠ» β Π³Π΅ΠΊΡΠ°Π½). ΠΡΠΈ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠΈ ΠΈΠ· ΡΠΎΡΡΠ°Π²Π° ΡΡΠ°Π½ΠΎΠ»Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ
ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΠ΅ ΡΠ°ΡΡ
ΠΎΠ΄Π° Π΄ΠΎ 7,8 Π³/Π³ ΠΠΠ, Π½ΠΎ Π² ΡΡΠΎΠΌ ΡΠ»ΡΡΠ°Π΅ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠ° Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ°
Π±ΠΈΠΎΠΌΠ°ΡΡΡ Ρ ΡΠ΅Π»ΡΡ ΡΠ°Π·ΡΡΡΠ΅Π½ΠΈΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΡΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ² ΠΈΠ»ΠΈ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½Π°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ°
ΡΠ½Π°ΡΠ°Π»Π° ΡΠΏΠΈΡΡΠΎΠΌ, Π° Π·Π°ΡΠ΅ΠΌ Π΄ΠΈΡ
Π»ΠΎΡΠΌΠ΅ΡΠ°Π½ΠΎΠΌ. ΠΠ΅Π·ΡΠ΅Π°Π³Π΅Π½ΡΠ½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅
Π΄Π΅ΡΠ΅ΡΠ³Π΅Π½ΡΠ° Π΄ΠΎΠ΄Π΅ΡΠΈΠ»ΡΡΠ»ΡΡΠ°ΡΠ° Π½Π°ΡΡΠΈΡ (ΠΠΠ‘-Na) ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π±ΠΎΠ»Π΅Π΅ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ½ΡΠΌ ΡΠΏΠΎΡΠΎΠ±ΠΎΠΌ
ΠΏΠΎΠ»ΡΡΠ°ΡΡ Π²ΡΡΠΎΠΊΠΈΠ΅ Π²ΡΡ
ΠΎΠ΄Ρ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°, Π½Π΅ Π·Π°Π³ΡΡΠ·Π½Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅ΡΡΠΌΠΈ ΠΆΠΈΡΠ½ΡΡ
ΠΊΠΈΡΠ»ΠΎΡ, ΠΏΡΠΈΠ³ΠΎΠ΄Π½ΠΎΠ³ΠΎ
Π΄Π»Ρ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Π»Π΅ΠΉ (ΡΠ°ΡΠ°, ΡΠΏΠ°ΠΊΠΎΠ²ΠΎΡΠ½Π°Ρ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΡ). Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄,
ΠΊΠΎΡΠΎΡΡΠΉ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠ½ΠΈΠΆΠ°Π΅Ρ ΡΠ°ΡΡ
ΠΎΠ΄Ρ ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ² ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠ°ΡΡ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ Π²ΡΡΠΎΠΊΠΎΠΉ
ΡΠΈΡΡΠΎΡΡ ΠΏΡΠΈ ΠΏΠΎΠ»Π½ΠΎΡΠ΅ ΡΠΊΡΡΡΠ°ΠΊΡΠΈΠΈ Π΄ΠΎ 98,5β99,0 %A comparative study of different methods of PHA extraction from the biomass of bacteria was carried
out. It was shown that different reagents and process technologies have different effects on the
extraction results β the completeness of polymer extraction and degree of its purity. Application of
chloroform requires the use of large amounts of volatile and toxic reagents. When dichloromethane
is used, the completeness of extraction increases, but it becomes necessary to implement procedures
for separating the βextractant-precipitatorβ mixture. The solvent-precipitator pair (dichloromethanehexane)
was selected, which does not lead to formation of an azeotropic mixture, making it possible
to return up to 90 % of the reactants to the process. As a result, solvent consumption went down from
73.5 kg/kg of PHA (chloroform β hexane) to 63.7 kg/kg of PHA (chloroform β ethanol β hexane). If
ethanol is excluded, it is possible to reduce the consumption to 7.8 g/g of PHA, but in this case additional
treatment of biomass to destroy membrane complexes or sequential treatment first with alcohol and
then with dichloromethane is needed. A nonchemical method using sodium dodecyl sulfate (NaDS)
as a detergent allows for a more economical way to obtain high yields of polymer not contaminated
with admixtures of fatty acids and suitable for technical purposes (packaging, packaging products).
A combined method was developed, which considerably reduces the cost of reagents and makes it
possible to obtain polymers with high purity degree and extraction completeness up to 98.5β99.0
The Kinetics of Fungicide and Herbicide Release from Slow-Release Formulations Prepared from Degradable Poly-3- Hydroxybutyrate
ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠΈΠ½Π΅ΡΠΈΠΊΠΈ ΠΎΡΡΠΎΠΊΠ° ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² ΡΠ΅Π±ΡΠΊΠΎΠ½Π°Π·ΠΎΠ»Π° ΠΈ ΠΌΠ΅ΡΡΠΈΠ±ΡΠ·ΠΈΠ½Π° ΠΈΠ· ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
Π½ΠΎΡΠΈΡΠ΅Π»Π΅ΠΉ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΡ
ΠΈΠ· ΠΏΠΎΠ»ΠΈ-3-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ±ΡΡΠΈΡΠ°ΡΠ° ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΠΎΡΠΌΡ: Π³ΡΠ°Π½ΡΠ»Ρ, ΠΏΠ»Π΅Π½ΠΊΠΈ ΠΈ 3D-ΡΠΎΡΠΌΡ. ΠΡΡΠ²Π»Π΅Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ Π·Π°ΠΊΠΎΠ½ΠΎΠΌΠ΅ΡΠ½ΠΎΡΡΠΈ ΠΎΡΡΠΎΠΊΠ°, ΡΠ°ΡΡΡΠΈΡΠ°Π½Ρ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΊΠΎΠ½ΡΡΠ°Π½ΡΡ Π΄Π»Ρ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π²ΡΡ
ΠΎΠ΄Π° ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡΡΠ΄ΠΊΠ° ΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π₯ΠΈΠ³ΡΡΠΈRelease kinetics of the fungicide tebuconazole and the herbicide metribuzin from polymeric carriers was investigated. Carriers were prepared from poly-3- hydroxybutyrate as granules, films and 3D forms. The main mechanisms of pesticide release were discovered; kinetic constants for the first order model and Higuchi model were calculate
Scaling of Biodegradable Polyhydroxyalkanoates Synthesis Technology in Pilot Production Conditions
ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡΡ
ΡΠ΅Ρ
Π½ΠΈΠΊΠΎ-ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ²
Π±ΠΈΠΎΡΠΈΠ½ΡΠ΅Π·Π° ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΠΈΡΡ
ΠΎΠ΄Π½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΏΡΠΎΠ΅ΠΊΡ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΠΎΠΏΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π°
ΡΠ°Π·ΡΡΡΠ°Π΅ΠΌΡΡ
ΠΏΠΎΠ»ΠΈΠ³ΠΈΠ΄ΡΠΎΠΊΠΈΡΠ°Π»ΠΊΠ°Π½ΠΎΠ°ΡΠΎΠ² (ΠΠΠ). Π‘ΠΊΠΎΠ½ΡΡΡΡΠΈΡΠΎΠ²Π°Π½ΠΎ, ΡΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ²Π°Π½ΠΎ ΠΈ Π²Π²Π΅Π΄Π΅Π½ΠΎ Π²
ΡΡΡΠΎΠΉ ΠΏΠΈΠ»ΠΎΡΠ½ΠΎΠ΅ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΠΏΠΎΠ»ΠΈΠ³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ°Π»ΠΊΠ°Π½ΠΎΠ°ΡΠΎΠ², Π²ΠΊΠ»ΡΡΠ°ΡΡΠ΅Π΅ ΡΠ΅ΡΠΌΠ΅Π½ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ Π»ΠΈΠ½ΠΈΡ
Β«BioengineeringΒ» (Π¨Π²Π΅ΠΉΡΠ°ΡΠΈΡ) ΠΈ Π±Π»ΠΎΠΊΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΈΠ½ΠΎΠΊΡΠ»ΡΡΠ° ΠΈ ΠΏΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΡ
ΡΡΠ΅Π΄, Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ
ΠΈ ΠΎΡΠΈΡΡΠΊΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΎΠ². ΠΠΏΡΡΠ½ΠΎΠ΅ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ Π²Π²Π΅Π΄Π΅Π½ΠΎ Π² ΡΡΡΠΎΠΉ. ΠΡΠΈ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ
ΠΈΠ½ΠΎΠΊΡΠ»ΡΡΠ° (10Β±2) Π³/Π» ΠΈ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΊΡΠ»ΡΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½ΠΈΡ 65 Ρ ΠΊΠΎΠ½Π΅ΡΠ½ΡΠ΅ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π±ΠΈΠΎΠΌΠ°ΡΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ ΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ° Π² ΠΊΡΠ»ΡΡΡΡΠ΅ Cupriavidus eutrophus Π10646 ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΈ (110Β±10) Π³/Π» ΠΈ (85Β±5) %
ΠΏΡΠΈ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΏΠΎ Π±ΠΈΠΎΠΌΠ°ΡΡΠ΅ ΠΈ ΠΠΠ 1,7 ΠΈ 1,4 Π³/Π»βΡ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ, ΡΡΠΎ
Π²Π΄Π²ΠΎΠ΅ ΠΏΡΠ΅Π²ΠΎΡΡ
ΠΎΠ΄ΠΈΡ ΡΠ°Π½Π΅Π΅ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ Π² ΠΊΡΠ»ΡΡΡΡΠ΅ Ralstonia eutrophus B5786 Π½Π°
ΡΡΡΠΊΡΠΎΠ·Π΅. ΠΠ°ΡΡΡΠ°Π±ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ»ΠΎ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠ΅ ΠΎΠΏΡΡΠ½ΡΡ
ΠΏΠ°ΡΡΠΈΠΉ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΎΠ²
Π² ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π°Ρ
, Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΡ
Π΄Π»Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ,
ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΈ ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈOn the basis of experimentally achieved and developed technical and technological parameters of
biosynthesis processes the baseline data were obtained and the project was worked out for organization
of pilot production of degradable polyhydroxyalkanoates (PHAs). The pilot line for production of
polyhydroxyalkanoates was designed, equipped and commissioned, including the βBioengineeringβ
fermentation line (Switzerland), as well as the blocks for preparation of inoculum and culture media,
isolation and purification of polymers. The pilot production was commissioned. When the initial
concentration of inoculum was (10 Β± 2) g/l and the cultivation duration was 65 h, the final concentrations
of cells biomass in the culture of Cupriavidus eutrophus Π10646 and polymer were (110Β±10) g/l and
(85Β±5)%, with the process productivity by biomass and PHA of 1.7 and 1.4 g/lβh, respectively, which
is twice as high as the previously achieved results in the culture of Ralstonia eutrophus B5786 on
fructose. Scaling the technology made it possible to obtain the experimental batches of polymers in the
amounts needed for conducting a complex of prescribed research, development and standardization
of specialized polymer product