Limits...
Purification of Alaskan walleye pollock (Gadus chalcogrammus) and New Zealand hoki (Macruronus novaezelandiae) liver oil using short path distillation.

Oliveira AC, Miller MR - Nutrients (2014)

Bottom Line: The beneficial health effects of a diet rich in n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) have been extensively researched in recent years.Presently these oils are used as ingredients for animal feed, and only limited quantities are used as human nutritional products.Purified oils met the Global Organization for EPA and DHA Omega-3 (GOED) standard for edible fish oils.

View Article: PubMed Central - PubMed

Affiliation: Alaska Sea Grant Marine Advisory Program, University of Alaska Fairbanks, 118 Trident Way, Kodiak, AK 99615, USA. acoliveira@alaska.edu.

ABSTRACT
The beneficial health effects of a diet rich in n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) have been extensively researched in recent years. Marine oils are an important dietary source of n-3 LC-PUFA, being especially rich in two of the most important fatty acids of this class, EPA (eicosapentaenoic acid; 20:5n-3) and DHA (docosahexaenoic acid; 22:6n-3). Oils rich in n-3 LC-PUFA are prone to oxidation that leads to loss of product quality. Alaskan pollock (Gadus chalcogrammus Pallas, 1814) and New Zealand's hoki (Macruronus novaezelandiae Hector, 1871) are the highest volume fisheries of their respective countries. Both produce large quantities of fishery byproducts, in particular crude or unrefined n-3 LC-PUFA containing oils. Presently these oils are used as ingredients for animal feed, and only limited quantities are used as human nutritional products. The aim of this research was to investigate the applicability of short path distillation for the purification of pollock and hoki oil to produce purified human-grade fish oil to meet quality specifications. Pollock and hoki oils were subjected to short path distillation and a significant decrease in free fatty acids and lipid oxidation (peroxide and para-anisidine values) products was observed. Purified oils met the Global Organization for EPA and DHA Omega-3 (GOED) standard for edible fish oils.

Show MeSH
Quality indices of crude pollock (n = 3) and hoki (n = 3) oils, purified by short path distillation with variable evaporator temperatures (190 °C, 200 °C and 210 °C). (a) Peroxide Values; (b) para-Anisidine Values; (c) TOTOX Values; and (d) free fatty acids (FFA) Values.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4042562&req=5

nutrients-06-02059-f002: Quality indices of crude pollock (n = 3) and hoki (n = 3) oils, purified by short path distillation with variable evaporator temperatures (190 °C, 200 °C and 210 °C). (a) Peroxide Values; (b) para-Anisidine Values; (c) TOTOX Values; and (d) free fatty acids (FFA) Values.

Mentions: Figure 2a depicts the PV of crude hoki and pollock oils together with values determined after oils were subjected to molecular distillation with set evaporator temperatures of 190, 200 or 210 °C. The crude pollock oil, with an initial PV of 6.32 ± 0.45 mEq/kg, was purified by molecular distillation with set evaporator temperatures of 190 °C (PV of 0.13 ± 0.06 mEq/kg), 200 °C (PV of 0.10 ± 0.00 mEq/kg) and 210 °C (PV of 0.10 ± 0.00 mEq/kg) (Figure 2a). PV of the three refined pollock oils did not statistically differ from each other and were all significantly (p < 0.001, f = 561.1) lower than the crude pollock oil. The crude hoki oils had significantly (p < 0.001, f = 113.6) higher PV, 10.33 ± 1.15 mEq/kg, than the values measured for any of the distilled hoki oils (190 °C 2.32 ± 0.28 mEq/kg; 200 °C 2.38 ± 0.44 mEq/kg; 210 °C 2.28 ± 0.33 mEq/kg). Significant differences were not observed in the PV of hoki oils distilled at the different evaporator temperatures tested.


Purification of Alaskan walleye pollock (Gadus chalcogrammus) and New Zealand hoki (Macruronus novaezelandiae) liver oil using short path distillation.

Oliveira AC, Miller MR - Nutrients (2014)

Quality indices of crude pollock (n = 3) and hoki (n = 3) oils, purified by short path distillation with variable evaporator temperatures (190 °C, 200 °C and 210 °C). (a) Peroxide Values; (b) para-Anisidine Values; (c) TOTOX Values; and (d) free fatty acids (FFA) Values.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042562&req=5

nutrients-06-02059-f002: Quality indices of crude pollock (n = 3) and hoki (n = 3) oils, purified by short path distillation with variable evaporator temperatures (190 °C, 200 °C and 210 °C). (a) Peroxide Values; (b) para-Anisidine Values; (c) TOTOX Values; and (d) free fatty acids (FFA) Values.
Mentions: Figure 2a depicts the PV of crude hoki and pollock oils together with values determined after oils were subjected to molecular distillation with set evaporator temperatures of 190, 200 or 210 °C. The crude pollock oil, with an initial PV of 6.32 ± 0.45 mEq/kg, was purified by molecular distillation with set evaporator temperatures of 190 °C (PV of 0.13 ± 0.06 mEq/kg), 200 °C (PV of 0.10 ± 0.00 mEq/kg) and 210 °C (PV of 0.10 ± 0.00 mEq/kg) (Figure 2a). PV of the three refined pollock oils did not statistically differ from each other and were all significantly (p < 0.001, f = 561.1) lower than the crude pollock oil. The crude hoki oils had significantly (p < 0.001, f = 113.6) higher PV, 10.33 ± 1.15 mEq/kg, than the values measured for any of the distilled hoki oils (190 °C 2.32 ± 0.28 mEq/kg; 200 °C 2.38 ± 0.44 mEq/kg; 210 °C 2.28 ± 0.33 mEq/kg). Significant differences were not observed in the PV of hoki oils distilled at the different evaporator temperatures tested.

Bottom Line: The beneficial health effects of a diet rich in n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) have been extensively researched in recent years.Presently these oils are used as ingredients for animal feed, and only limited quantities are used as human nutritional products.Purified oils met the Global Organization for EPA and DHA Omega-3 (GOED) standard for edible fish oils.

View Article: PubMed Central - PubMed

Affiliation: Alaska Sea Grant Marine Advisory Program, University of Alaska Fairbanks, 118 Trident Way, Kodiak, AK 99615, USA. acoliveira@alaska.edu.

ABSTRACT
The beneficial health effects of a diet rich in n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) have been extensively researched in recent years. Marine oils are an important dietary source of n-3 LC-PUFA, being especially rich in two of the most important fatty acids of this class, EPA (eicosapentaenoic acid; 20:5n-3) and DHA (docosahexaenoic acid; 22:6n-3). Oils rich in n-3 LC-PUFA are prone to oxidation that leads to loss of product quality. Alaskan pollock (Gadus chalcogrammus Pallas, 1814) and New Zealand's hoki (Macruronus novaezelandiae Hector, 1871) are the highest volume fisheries of their respective countries. Both produce large quantities of fishery byproducts, in particular crude or unrefined n-3 LC-PUFA containing oils. Presently these oils are used as ingredients for animal feed, and only limited quantities are used as human nutritional products. The aim of this research was to investigate the applicability of short path distillation for the purification of pollock and hoki oil to produce purified human-grade fish oil to meet quality specifications. Pollock and hoki oils were subjected to short path distillation and a significant decrease in free fatty acids and lipid oxidation (peroxide and para-anisidine values) products was observed. Purified oils met the Global Organization for EPA and DHA Omega-3 (GOED) standard for edible fish oils.

Show MeSH