Fatty acids

Bài viết trình bày đánh giá khả năng của TBAC hạn chế sự gia tăng glucose máu sau ăn và xác định các acid béo chuỗi ngắn (short-chain fatty acids - SCFA) được chuyển hóa từ TBAC trong đường tiêu hóa của chuột khỏe mạnh bằng HPLC.

8p viuchiha 03-01-2025 1 1   Download

Fatty acids are an important energy source, for they yield over twice as much energy as an equal mass of carbohydrate or protein. In humans, the primary dietary source of fatty acids is triacylglycerols. This lecture will describe the metabolism of fatty acids. The two main components of fatty acid metabolism are β oxidation and fatty acid synthesis. Upon completion of this lecture, you will understand that the fatty-acid breakdown reactions of β oxidation result in the formation of reduced cofactors and acetyl-CoA molecules, which can be further catabolized to release free energy.

64p zingzing09 21-10-2012 106 10   Download

Tham khảo bài thuyết trình 'chapter 5. lipid metabolism', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

64p zingzing09 21-10-2012 62 7   Download

Nguồn thức ăn giàu acid béo có 1 nối đôi Monounsaturated Fatty Acid (MUFA): Dầu thực vật bao gồm: Dầu phọng, dầu olive, dầu cải, dầu hồ đào, dầu hạnh nhân, dầu cây óc chó, Quả lê. Nguồn thức ăn giàu acid béo có niều nối đôi Polyunsaturated Fatty Acid (PUFA): Dầu thực vật bao gồm: dầu bắp, dầu cây rum, dầu hướng dương, dầu đậu nành

75p huyentrangho 31-05-2013 114 22   Download

.Dầu đậu nành là nguồn cung cấp linoleic để tạo ra acid béo omega-3 trong sản phẩm động vật như DHA, ARA omega- .Acid béo Omega-3 & Omegadầu đậu nành: Overview Omega-3 fatty acids • -Linolenic acid là một acid béo thiết yếu. • Nó có thể làm giảm nguy cơ của các bệnh mạn tính như: Viêm thấp khớp, ung thư, Tim mạch vành, etc… Hình chụp của United Soybean Board .

52p huyentrangho 31-05-2013 110 10   Download

Bài giảng "An toàn thực phẩm: Chương 3.2 - Các độc tố tự nhiên có nguồn gốc thực vật" được biên soạn với các nội dung chính sau đây: Nấm độc; Các cianogenic glycosides(Amigdalin,prunasin..); Các Acid béo độc (cyclopropene fatty acids); Glucosinolates (Các hợp chất gây bướu giáp - thiocyanat, izothicyanat); Solanin; Các alcaloid. Mời các bạn cùng tham khảo bài giảng!

22p hongbach205 01-03-2023 19 6   Download

The thesis has identified the chemical composition, nutritional value of several tannin-fed leaf tops common in Vietnam and the effects of the source and the level of each type of plant to the substrate on the rate and in vitro gas characterization, methane production, in vitro digestibility, energy value (ME) and short-chain fatty acid content.

27p mangamanga 21-02-2020 38 6   Download

Tốc độ tăng trưởng tuyệt đối ngày Đồng Đồng Bằng Sông Cửu Long Đơn vị tính Hệ số chuyển hóa thức ăn Hemoglobin Highly Unsaturated Fatty Acid Khoa Học Công Nghệ Tốc độ tăng trưởng đặc biệt Poly Unsaturated Fatty Acid Thức Ăn Công Nghiệp Thức ăn Tự Chế Trung bình Khối lượng Đô la Mỹ

46p thiepmoi123 24-06-2013 114 17   Download

Cannabinoid receptors and their endogenous ligands, the endocannabinoids, have been detected in several blood immune cells, including monocytes/macrophages, basophils and lymphocytes. However, their presence in dendritic cells, which play a key role in the initiation and development of the immune response, has never been investigated.

8p system191 01-06-2013 29 4   Download

Certain amino acids, like glutamine and leucine, induce an anabolic response in liver. They activate p70 ribosomal protein S6 kinase (p70S6K) and acetyl-CoA carboxylase (ACC) involved in protein and fatty acids synthesis, respectively. In contrast, the AMP-activated protein kinase (AMPK), which senses the energy state of the cell and becomes activated under metabolic stress, inactivates by phosphorylation key enzymes in biosynthetic pathways thereby conserving ATP.

9p system191 01-06-2013 50 5   Download

Liver metabolism is influenced by hormones and nutrients. Amino acids such as glutamine or leucine induce an anabolic response, which resembles that of insulin in muscle and adipose tissue. In this work, the signalling pathways and the effects of insulin were compared to those of glutamine and leucine in isolated hepatocytes from normal and streptozotocin-diabetic rats.

9p system191 01-06-2013 48 5   Download

This study investigated the enzymatic function of two putative plant GPXs, GPXle1 from Lycopersicon esculentum and GPXha2 from Helianthus annuus, which show sequence identities with the mammalian phospholipid hydroperoxide glutathione peroxidase (PHGPX). Both purified recombinant proteins expressed in Escherichia coli show PHGPX activity by reducing alkyl, fatty acid and phospholipid hydroperoxides but not hydrogen peroxide in the presence of glutathione.

7p research12 01-06-2013 37 4   Download

Cytochrome P450foxy (P450foxy, CYP505) is a fused protein of cytochrome P450 (P450) and its reductase isolated from the fungus Fusarium oxysporum, which catalyzes the subterminal (x-1x-3) hydroxylation of fatty acids. Here, we produced, purified and characterized a fused recombinant protein (rP450foxy) using the Escherichia coli expression system. Purified rP450foxy was catalytically and spectrally indistinguishable from the native protein, but most of the rP450foxy was recovered in the soluble fraction of E. coli cells unlike the membrane-bound native protein....

8p research12 01-06-2013 58 4   Download

As an adaptation process to the growth retardation provoked by the presence of nonlethal concentrations of ergosterol biosynthesis inhibitors, Ustilago maydis alters the ratio of linoleic to oleic acid bound to plasma membrane ´ complex lipids [Hernandez, A., Cooke, D.T., Lewis, M. & Clarkson, D.T. (1997) Microbiology 143, 3165–3174]. This alteration increases plasma membrane H+-ATPase hydrolytic activity.

6p research12 01-06-2013 38 4   Download

The eukaryotic glyoxylate cycle has been previously hypothesized to occur in the peroxisomal compartment, which in the yeast Saccharomyces cerevisiae additionally represents the sole site for fatty acid b-oxidation. The subcellular location of the key glyoxylate-cycle enzyme malate synthase 1 (Mls1p), an SKL-terminated protein, was examined in yeast cells grown on di€erent carbon sources.

8p research12 01-06-2013 42 4   Download

The citric acid or tricarboxylic acid cycle is a central element of higher-plant carbon metabolism which provides, among other things, electrons for oxidative phosphorylation in the inner mitochondrial membrane, intermediates for aminoacid biosynthesis, and oxaloacetate for gluconeogenesis from succinate derived from fatty acids via the glyoxylate cycle in glyoxysomes. The tricarboxylic acid cycle is a typical mitochondrial pathway and is widespread among a-proteobacteria, the group of eubacteria as de®ned under rRNA systematics from which mitochondria arose. ...

16p research12 01-06-2013 43 3   Download

We are interested in constructing a model for the substrate-bindingsiteof fattyacidelongase-13-ketoacylCoAsynthase (FAE1 KCS),the enzyme responsible forproductionof very long chain fatty acids of plant seed oils.Arabidopsis thaliana andBrassica napusFAE1 KCS enzymes are highly homo-logous but the seed oil content of these plants suggests that their substrate specificities differ with respect to acyl chain length.

10p research12 29-04-2013 30 3   Download

Phaeodactylum tricornutum is an unicellular silica-less diatom in which eicosapentaenoic acid accumulates up to 30%of the total fattyacids.Thismarinediatomwasused for cloning genes encoding fatty acid desaturases involved in eicosapentaenoic acid biosynthesis. Using a combination of PCR, mass sequencing and library screening, the coding sequences of two desaturases were identified.

9p research12 23-04-2013 45 4   Download

Triacylglycerols secreted by liver and carried by very low density lipoprotein (VLDL) are hydrolysed in circulation by lipoprotein and hepatic lipases. These enzymes have been shown to have positional and fatty acid specificityin vitro.If there were specificity in basal lipolysisin vivo, triacylglycerol compositionsofcirculatingandnewlysecretedVLDLwould be different. To study this we compared the composition of normal fasting VLDL triacylglycerol of Wistar rats to that obtained after blocking lipolysis by Triton WR1339, which increasedplasmaVLDL triacylglycerol concentrationabout 4.

10p tumor12 22-04-2013 33 3   Download

Genomicfattyacid elongation 1 (FAE1) clones from high erucic acid (HEA)Brassica napus, Brassica rapaandBras-sicaoleracea, and lowerucicacid (LEA)B. napuscv.Westar, were amplifiedbyPCRand expressed inyeast cells under the control of the strong galactose-inducible promoter. As expected, yeast cells expressing theFAE1genes from HEA Brassicaspp. synthesized very long chain monounsaturated fatty acids that are not normally found in yeast, while fatty acid profiles of yeast cells expressing theFAE1gene from LEA B. napuswere identical to control yeast samples....

7p tumor12 22-04-2013 41 2   Download