Effect of Garlic Juice on Quality Changes of Oyster (Crassostrea Belcheri) Meat During Chilled Storage

Surat-thani oyster, a big and thin-shell bivalve mollusks, has been registered as Geographical Indicators, GI, as its good taste and delicacy as well as nutritious. Eaten style is raw then there is high risk to face with some disease as oyster is filter feeder. Physical, chemical, microbiological and sensory qualities after the oyster meat treated with the garlic juice at 0, 2 and 3 ml, respectively were monitored. Though initial pH of the control, untreated with garlic juice, was higher compared with the sample treated with 3 ml garlic juice, pH of it (control) was significantly lower (p5) at the end of the storag

Eight new cyclopentenone and cyclohexenone derivatives from the marine-derived fungus <i>Aspergillus</i> sp. SCSIO 41501 by OSMAC strategy

One strain many compounds (OSMAC) strategy was an effective method to activate the silent biosynthetic genes of microorganisms. Comparison with our previous investigations on the secondary metabolites of the marine-derived fungus Aspergillus sp. SCSIO 41501, in this study, three new cyclopentenone derivatives, aspergispones A-C (1–3), and five new cyclohexenone derivatives, aspergispones D-H (4–8), together with two known analogues, were further isolated from the fungal strain by altering culture medium compositions. The structures of new compounds were elucidated by extensive spectroscopic analysis. And the absolute configurations of 4 and 7 were further confirmed by single-crystal X-ray diffraction experiments.</p

Two new linear peptides from the marine-derived fungus <i>Penicillium</i> sp. SCSIO 41512

Two new linear peptides, penicamides A and B (1 and 2), together with four known analogous were isolated from the extracts of the marine-derived fungus Penicillium sp. SCSIO 41512. Their structures were elucidated by analysis of 1D/2D NMR data and HRESI-MS. Their absolute configurations were established by Marfey’s methods and quantum chemical calculations.</p

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435

Purine Alkaloids from the South China Sea Gorgonian <i>Subergorgia suberosa</i>

Four new purine alkaloids, namely, 6-(1′-purine-6′,8′-dionyl)suberosanone (1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione (2), 1-(3′-carbonylbutyl)purine-6,8-dione (3), and 9-(3′-carbonylbutyl)purine-6,8-dione (4), together with three known compounds, guanosine (5), thymidine (6), and adenosine (7), were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1–4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1−4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435