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Yun, J.H.,Lee, H.Y.,Asaduzzaman, A.K.M.,Chun, B.S. Korean Society of Industrial and Engineering Chemi 2013 Journal of industrial and engineering chemistry Vol.19 No.2
Lecithin was isolated from squid viscera residues after supercritical carbon dioxide (SC-CO<SUB>2</SUB>) extraction at 25MPa and 45<SUP>o</SUP>C. The particle formation of squid lecithin with biodegradable polymer, polyethylene glycol (PEG) was performed by PGSS using SC-CO<SUB>2</SUB> in a thermostatted stirred vessel. By applying different temperatures (40 and 50<SUP>o</SUP>C) and pressures (20-30MPa), conditions were optimized. Two nozzles of different diameters (250 and 300μm) were used for PGSS and the reaction time was 1h. The average diameter of the particles obtained by PGSS at different conditions was about 0.74-1.62μm. The lowest average size of lecithin particle with PEG was found by the highest SC-CO<SUB>2</SUB> density conditions with the stirring speed of 400rpm and nozzle size of 250μm. The inclusion of lecithin in PEG was quantified by HPLC. Acid value and peroxide value was measured after micronization of lecithin.
Asaduzzaman, A.K.M.,Chun, Byung-Soo Elsevier 2015 Journal of industrial and engineering chemistry Vol.21 No.-
<P><B>Abstract</B></P> <P>Lecithin was isolated with ethanol from deoiled mackerel muscle after supercritical carbon dioxide (SC-CO<SUB>2</SUB>) and hexane extraction. Lecithin was also isolated by SC-CO<SUB>2</SUB> with ethanol as co-solvent after oil removing by SC-CO<SUB>2</SUB> extraction. The main phospholipids of mackerel lecithin were phosphatidylcholine (PC) 20.11% and phosphatidylethanolamine (PE) 67.44%. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were found in substantial amount in both phospholipids. After quality parameters checking, lecithin isolated by SC-CO<SUB>2</SUB> with ethanol from deoiled mackerel muscle showed better results compared to other systems. Oxidative stability and antioxidant activity of lecithin was high and significant differences were not found using those systems.</P>
Asaduzzaman, A K M,Chun, Byung-Soo Association of Food ScientistsTechnologists, India 2015 Journal of food science and technology Vol.52 No.6
<P>The oil in mackerel muscle was extracted using an environmental friendly solvent, supercritical carbon dioxide (SC-CO2) at a semi-batch flow extraction process and an n-hexane. The SC-CO2 was carried out at temperature 45?C and pressures ranging from 15 to 25?MPa. The flow rate of CO2 (27?g/min) was constant at the entire extraction period of 2?h. The highest oil extracted residues after SC-CO2 extraction was used for activity measurement of digestive enzymes. Four digestive enzymes were found in water soluble extracts after n-hexane and SC-CO2 treated samples. Amylase, lipase and trypsin activities were higher in water soluble extracts after SC-CO2 treated samples except protease. Among the four digestive enzymes, the activity of amylase was highest and the value was 44.57?uM/min/mg of protein. The water soluble extracts of SC-CO2 and n-hexane treated mackerel samples showed same alkaline optimum pH and pH stability for each of the digestive enzymes. Optimum temperature of amylase, lipase, protease and trypsin was 40, 50, 60 and 30?C, respectively of both extracts. More than 80?% temperature stability of amylase, lipase, protease and trypsin were retained at mentioned optimum temperature in water soluble extracts of both treated samples. Based on protein patterns, prominent protein band showed in water soluble extracts after SC-CO2 treated samples indicates no denaturation of protein than untreated and n-hexane.</P>
( A. S. M. Tanbirul Haque ),( A. K. M. Asaduzzaman ),( Byung Soo Chun ) 한국수산과학회(구 한국수산학회) 2014 Fisheries and Aquatic Sciences Vol.17 No.1
The oil in mackerel muscle was extracted using an environment friendly solvent, supercritical carbon dioxide (SC-CO2) at a semi- batch flow extraction process and an n-hexane. The SC-CO2 was maintained at a temperature of 45oC under pressures ranging from 15 to 25 MPa. The flow rate of CO2 (27 g/min) was constant during the entire 2 h extraction period. The fatty acid composi- tion of the oil was analyzed using gas chromatography (GC). Significant concentrations of eicosapentaenoic acid (EPA) acid and docosahexaenoic acid (DHA) acid were present in the SC-CO2 extracted oil. The oil extracted using SC-CO2 exhibited increased stability compared with n-haxane extracted oil. Particles of mackerel oil together with the biodegradable polymer, polyethylene glycol (PEG) were formed using a gas saturated solution process (PGSS) with SC-CO2 in a thermostatted stirred vessel. Different temperatures (45-55oC), pressures (15-25 MPa) and a nozzle size 400 μm were used for PGSS with a 1 h reaction time. The stabil- ity of mackerel oil in the particles did not changed significantly.
Asaduzzaman, A.K.M.,Lee, Won-Kyoung,Chun, Byung-Soo The Korean Society of Fisheries and Aquatic Scienc 2014 Fisheries and Aquatic Sciences Vol.17 No.1
We measured the reductions in size and solubility of mackerel muscle that was freeze-dried, deoiled by supercritical carbon dioxide (SC-$CO_2$), or roasted. The percent size reduction and solubility were high in SC-$CO_2$-treated muscle compared with freeze-dried and roasted muscle. We used oil-free residues to test for heavy metals and determine microbial safety. The SC-$CO_2$, hexane, and ethanol were used to separate oil from muscle. The concentrations of cadmium (Cd) in all treated muscles were less than the values reported in the literature, as were the concentrations of lead in SC-$CO_2$- and hexane- treated muscle. In contrast, concentrations of arsenic and mercury in muscles were greater than the reported values regardless of treatment. Zinc and iron, which are beneficial for health, were found in high levels after all treatments of muscle tissue. After 6 months of storage at different temperatures, SC-$CO_2$-and ethanol-treated muscle showed few bacterial colonies, and none were found after 4 months of storage at $-20^{\circ}C$. These results will be useful to food-processing industries for maintaining high-quality, safe mackerel muscle.
( A. K. M. Asaduzzaman ),( Won Kyoung Lee ),( Byung Soo Chun ) 한국수산과학회(구 한국수산학회) 2014 Fisheries and Aquatic Sciences Vol.17 No.1
We measured the reductions in size and solubility of mackerel muscle that was freeze-dried, deoiled by supercritical carbon dioxide (SC-CO2), or roasted. The percent size reduction and solubility were high in SC-CO2-treated muscle compared with freeze-dried and roasted muscle. We used oil-free residues to test for heavy metals and determine microbial safety. The SC-CO2, hexane, and ethanol were used to separate oil from muscle. The concentrations of cadmium (Cd) in all treated muscles were less than the values reported in the literature, as were the concentrations of lead in SC-CO2- and hexane- treated muscle. In contrast, concentrations of arsenic and mercury in muscles were greater than the reported values regardless of treatment. Zinc and iron, which are beneficial for health, were found in high levels after all treatments of muscle tissue. After 6 months of storage at different temperatures, SC- CO2- and ethanol-treated muscle showed few bacterial colonies, and none were found after 4 months of storage at -20oC. These results will be useful to food-processing industries for maintaining high-quality, safe mackerel muscle.
A. K. M. Asaduzzaman,Monjurul Haq,전병수 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
Various catalysts such as formic acid, acetic acid, sodium hydroxide, sodium bicarbonate, carbon dioxide and nitrogen gas were used for hydrolyzates production from deoiled mackerel muscle by subcritical water hydrolysis. Above 99% hydrolysis yield was obtained using sodium bicarbonate catalyst at 260 °C/70 bar. Histamine and heavy metals concentration were reduced in hydrolyzates. Highest amount of amino acid (400.36 mg/g) and reducing sugar (24.75 mg/g) were found in hydrolyzate obtained at 260 °C/70 bar and 220 °C/30 bar, respectively with sodium bicarbonate catalyst. Antioxidant and ACE-inhibitory activities were significantly higher in hydrolyzates obtained using sodium bicarbonate than that of others.
A. K. M. Asaduzzaman,전병수 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Lecithin was isolated with ethanol from deoiled mackerel muscle after supercritical carbon dioxide (SCCO2)and hexane extraction. Lecithin was also isolated by SC-CO2 with ethanol as co-solvent after oilremoving by SC-CO2 extraction. The main phospholipids of mackerel lecithin were phosphatidylcholine(PC) 20.11% and phosphatidylethanolamine (PE) 67.44%. Eicosapentaenoic acid (EPA) and docosahexaenoicacid (DHA) were found in substantial amount in both phospholipids. After quality parameterschecking, lecithin isolated by SC-CO2 with ethanol from deoiled mackerel muscle showed better resultscompared to other systems. Oxidative stability and antioxidant activity of lecithin was high andsignificant differences were not found using those systems.
Haque, A.S.M. Tanbirul,Asaduzzaman, A.K.M.,Chun, Byung-Soo The Korean Society of Fisheries and Aquatic Scienc 2014 Fisheries and Aquatic Sciences Vol.17 No.1
The oil in mackerel muscle was extracted using an environment friendly solvent, supercritical carbon dioxide (SC-$CO_2$) at a semibatch flow extraction process and an n-hexane. The SC-$CO_2$ was maintained at a temperature of $45^{\circ}C$ under pressures ranging from 15 to 25 MPa. The flow rate of $CO_2$ (27 g/min) was constant during the entire 2 h extraction period. The fatty acid composition of the oil was analyzed using gas chromatography (GC). Significant concentrations of eicosapentaenoic acid (EPA) acid and docosahexaenoic acid (DHA) acid were present in the SC-$CO_2$ extracted oil. The oil extracted using SC-$CO_2$ exhibited increased stability compared with n-haxane extracted oil. Particles of mackerel oil together with the biodegradable polymer, polyethylene glycol (PEG) were formed using a gas saturated solution process (PGSS) with SC-$CO_2$ in a thermostatted stirred vessel. Different temperatures ($45-55^{\circ}C$), pressures (15-25 MPa) and a nozzle size $400{\mu}m$ were used for PGSS with a 1 h reaction time. The stability of mackerel oil in the particles did not changed significantly.
이주희,A. K. M. Asaduzzaman,윤준호,윤준현,전병수 한국수산과학회 2012 Fisheries and Aquatic Sciences Vol.15 No.4
Yellow croaker Larimichthys polyactis muscle oil was extracted using an environmental friendly solvent, supercritical carbon dioxide (SC-CO2), in a semi-batch flow extraction process. SC-CO2 was applied at temperature 35°C to 45°C and 150°C to 250°C bar of pressure. The flow rate of CO2 (27.79 g/min) was constant throughout the entire 1.5 h extraction period. The oil extraction yield was influenced by the physical properties of SC-CO2 at different temperatures and pressures. The extracted oil was analyzed by gas chromatography to determine the fatty acid composition. According to our results, the SC-CO2 extracted oil was high in eicosapentaenoic acid and docosahexaenoic acid. In addition, the SC-CO2 extracted oil showed greater stability than n-hexane extracted oil based on the peroxide value and acid value. Thus, the quality of yellow croaker oil obtained by SC-CO2 extraction was slightly higher than that of oil obtained by n-hexane extraction.