... workers examination issues are often a voluntary matter Eicosanoids are mediators derived from arachidonicacid and include prostaglandins (PG), isoprostanes and leukotrienes (LT) These eicosanoids ... cysteinyl-leukotrienes [7] Isoprostanes are formed by free radical-catalyzed lipid peroxidation of arachidonicacid and act as a bioactive product of lipid peroxidation [8] Their formation is increased ... chemical purity >98% Acetonitrile was purchased from J.T Baker (Germany), methanol (GC-grade), acetic acid (glacial, pro analysi) and ammonium acetate p.a was purchased from Merck (Darmstadt, Germany)...
... 5-hydroperoxyeicosatetraenoic acid derived from arachidonicacid in ACTH-stimulated steroidogenesis in rat adrenal glands J Endocrinol 125, 89–96 Wang, X & Stocco, D.M (1999) Cyclic AMP and arachidonic acid: a tale ... of arachidonicacid metabolism in ACTHstimulated cortisol secretion by bovine adrenocortical cells Endocr Res 26, 705–709 Wang, X., Walsh, L.P., Reinhart, A.J & Stocco, D.M (2000) The role of arachidonic ... lipoxygenase products in steroidogenesis Biochem J 219, 529–537 Didolkar, A & Sundaram, K (1987) Arachidonicacid is involved in the regulation of hCG induced steroidogenesis in rat Leydig cells Life...
... and arachidonic acid: a tale of two pathways Mol Cell Endocrinol 158, 7–12 Wang XJ, Dyson MT, Jo Y, Eubank DW & Stocco DM (2003) Involvement of 5-lipoxygenase metabolites of arachidonicacid ... References Sigal E (1991) The molecular biology of mammalian arachidonicacid metabolism Am J Physiol 260, L13– L28 Brash AR (2001) Arachidonicacid as a bioactive molecule J Clin Invest 107, 1339–1345 ... protein) A 0.85 0.70 None + CHX + NDGA 0.20 0.15 0.10 0.05 0.00 Control Arachidonicacid 22(R)OHcholesterol Oleic Arachidic acidacid Progesterone (ng/mg protein) B a,b 0.25 a a 0.20 0.15 0.10 0.05...
... Pharmacologically induced fluorescence can be activated by the inhalation of a photosensitizer 5-Aminolevulinic acid (5-ALA), a commonly used photosensitizer prodrug, is suitable and safe for endobronchial application ... Huber RM, Schulz H, Stepp H, Rick K, Gamarra F, Leberig A, Roth C: Inhalation of 5-aminolevulinic acid: a new technique for fluorescence detection of early stage lung cancer J Photochem Photobiol ... JC: Detection of early stages of carcinogenesis in adenomas of murine lung by 5-aminolevulinic acid- induced protoporphyrin IX fluorescence Photochem Photobiol 1996, 64:676-682 Kato H, Aizawa...
... ACETIC ACID PRODUCTION IN DIFFERENT ETHANOL CONCENTRATION AT 30º AFTER 24 HOURS Time Ethanol % Growth Acid Production +4 +4 +3 +4 +4 24 Hours +2 - +3 +2 - 10 - - - - TABLE II GROWTH AND ACETIC ACID ... were examined according to their acetic acid production by titration assay and their turbidity due to bacterial growth The results showed their acetic acid percentage after mentioned incubation ... produce high levels of acetic acid Carr media with 4%, 5%, 6%, 7%, 8%, 9% and 10% ethanol were used [4] Characterization and biochemical tests: After isolation of acetic acid bacteria from Iranian...
... nhi u hoá ch t ñ t ti n, khó ki m Tài li u tham kh o [1] J B Brian, Wood, The Lactic Acid Bacteria, The Lactic Acid Bacteria in Health and Disease [2] A.F Harper, E.T Kornegay, K.L Bryant, H R Thomas, ... “Comparison of two strains of Lactobacillus acidophilus as dietary adjuncts for young calves”, J Dairy Sci 63 (1980) 964 Study on characteristics of lactic acid bacteria isolated in Hanoi Mai Dam ... strains were selected which have properties of Lactobacillus.7 - 10 selected strains producing lactic acid strongly (over 2000T), were able to inhibit the growth of some bacteria such as Shigella, E...
... according to the method of Garcia-Garibay and Marshall [19] The lactic acid culture was treated with 17% (w/v) of 80% trichloroacetic acid solution and centrifuged at 16,000-x g at 4°Cfor 30min.The ... and thirteen lactic acid bacteria isolates were obtained from seven fermented 742 World Appl Sci J., (5): 741-747, 2008 Table 1: Species and frequency of occurrence of lactic acid bacteria isolated ... fermenting foods, because of their ability to produce high levels of lactic acid as well as being able to survive under high acidic conditions High percentage of L.plantarum recorded in this present...
... lược tính chất vật lý , tính chất hóa học trạng thái tồn tư nhiên Amoniac, Acid Nitric, Phân đạm •Một số ứng dụng Amoniac, Acid Nitric Phân đạm vào đời sống •Quy trình sản xuất điều chế phòng thí ... 3H2O= CaCO3 + 2NH3 -Ngày nay: dùng phương pháp Haber Process Fe, 400-5000C N2 + 3H2 200 atm 2NH3 II .Acid nitric Sự tổng hợp axít nitric ghi nhận lần đầu vào khoảng năm 800 TCN nhà giả kim người Ả ... + 2H2O HNO3 đ,n làm thụ động hóa Al, Fe, Cr =>có thể dùng bình Al để đựng HNO3đ Khi đun nóng acid HNO3 oxi hóa phi kim S, C, P… 4HNO3+ C= CO2+ 4NO2 + 2H2O HNO3 đặc oxi hoá nhiều hợp chất...
... nucleic acid Nucleotide gồm có ba thành phần: đường pentose, base nitơ (nitrogen) phosphoric acid (Hình 4.3) 4.1.6 Sự tạo thành nucleic acid Các nucleotide nối với liên kết phosphodiester Acide ... có OH tự Nucleic acid gồm hai loại phân tử có cấu tạo giống DNA (desoxyribonucleic acid) RNA (ribonucleic acid) 4.1.7 Một số nucleotide quan trọng không tham gia cấu tạo nucleic acid - ADP ATP ... chất sử dụng để dịnh lượng nucleic acid xác định độ nucleic acid Khi đun nóng dung dịch nucleic acid nhiệt độ cao, thêm acd kiềm để ion hoá base nó, nucleic acid bị biến tính Phân tử DNA xoắn...
... CO2 + formate + aspactic acid + H2O → inosinic acid Từ inosinic acid tạo nên GMP AMP - Inozinic acid + aspactic acid + GTP → AMP + fumaric acid GDP + Pv - Inozinic acid + NAD + ATP + NH3 → GMP ... CO2 aspartic acid NH3 N Asparic acid CO2 N Quá trình tổng hợp nucleotide pyrimidine xảy qua giai đoạn sau: CO2 + NH3 + ATP → carbamyl-P Carbamyl-P + Aspactic acid → Orotic acid Orotic acid + Riboso5P ... β.aminoisobutyric acid tiếp tục biến đổi amino acid khác 12.2 Sinh tổng hợp nucleotide purine Gốc purine tạo từ nhiều thành phần khác nhau: CO2, aspartic acid, glycine, formate, glutamine CO2 aspartic acid...
... CHƯƠNG 15: ACID CARBOXYLIC HỖN CHỨC HYDROXY ACID Công thức tổng quát R (COOH)m (OH)n Danh pháp Hydroxy + tên acid carboxylic Tên số hydroxy acid Điều chế Nguồn gốc thiên nhiên Acid malic: táo Acid ... 15: ACID CARBOXYLIC HỖN CHỨC Danh pháp - Nhóm chức acid: gọi tên dạng hậu tố - Nhóm chức khác: gọi tên dạng tiền tố Thứ tự ưu tiên nhóm chức Acid carboxylic > anhydrid acid > Este > Halogenid acid ... OXO ACID 1.Định nghĩa R (COOH)m (CO)n 2.Danh pháp Danh pháp IUPAC Oxo + tên acid carboxylic formyl + tên acid carboxylic Ví dụ: Danh pháp khác CHƯƠNG 15: ACID CARBOXYLIC HỖN CHỨC Ceto + tên acid...
... family as sulphur, forms an acid analogous to sulphuric acid and called telluric acid It exists, however, as H6TeO6 (which looks like H2TeO4 + H2O) It is a diprotic acid Ka1 = 2.1 X 10-8 and Ka2 ... 0.044 M sodium acetate (Ans: 1.3, 2.88, 8.79, 2.27, 4.2) Polyatomic Acids & Bases 13 Phosphorus acid, H3PO4, is actually a diprotic acid; Ka1 = 1.0 X 10-2 and Ka2 = 2.6 X 10-7 What are the values ... solutions: (a) 0.05M HCl (b) 0.1M acetic acid (Ka = 1.75 x 10−5 (M)) (c) 0.1M aniline (Kb = 3.82 x 10−10 (M)) (d) 0.1M acetic acid plus 0.001 M HCl (e) 0.16M acetic acid plus 0.044 M sodium acetate (Ans:...