scholarly journals Seasonal Changes of Membrane Lipids in Apple Shoots

1990 ◽  
Vol 115 (3) ◽  
pp. 462-467 ◽  
Author(s):  
Shiow Y. Wang ◽  
Miklos Faust
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Cold Acclimation ◽  
Seasonal Changes ◽  
Membrane Lipids ◽  
Cold Winter ◽  
Free Sterols ◽  
Xylem Tissue ◽  
Monogalactosyl Diglyceride ◽  
Composition Changes

Composition changes in galactolipids, phospholipids, and sterols in apple shoots (Malus domestica Borkh. cv. Red Delicious) from August to April were determined. The predominant fatty acids in the membrane lipids of apple shoots were palmitic acid (C16:0), linoleic acid (C18:2), and linolenic acid (C18:3). The major galactolipid components in apple shoots were monogalactosyl diglyceride (MGDG) and digalactosyl diglyceride (DGDG). The amount of MGDG and DGDG increased from autumn to spring. Galactolipids contained highly unsaturated fatty adds, mainly linoleic (18:2) and linolenic (18:3) acid. The major individual phospholipids were phosphatidylcholine (PC) and phosphatidylethaeolamine (PE). β -Sitosterol and sitosteryl ester were the predominant sterols. The phloem contained higher amounts of galactolipids, phospholipids, and sterols than did the xylem tissue. There was a significant increase in the content of galactolipids and phospholipids and onsaturation of their fatty acids during cold acclimation. A decrease in the ratio of free sterols to phospholipids also occurred in apple shoots toward cold winter months. Composition changes in galactolipids, phospholipids, and sterols that were associated with growth cessation, defoliation and cold acclimation from fall to winter, were mostly reversed following deacclimation in spring.

scholarly journals Changes of Membrane Lipids in Apple Buds During Dormancy and Budbreak

1990 ◽  
Vol 115 (5) ◽  
pp. 803-808 ◽  
Author(s):  
Shiow Y. Wang ◽  
Miklos Faust
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Palmitic Acid ◽  
Linolenic Acid ◽  
Membrane Lipids ◽  
Free Sterols ◽  
Bud Growth ◽  
Terminal Buds ◽  
Monogalactosyl Diglyceride

The changes of membrane lipids in apple (Malus domestics Borkh. cv. Delicious) auxillary and terminal buds from August to April were determined. The predominant lipids were monogalactosyl diglyceride (MGDG), digalactosyl diglyceride (DGDG), phosphatidylcholine (PC), and phosphatidylethanolamine (PE). An increase in membrane polar lipids was associated with budbreak and bud growth from August to April. Linolenic acid was the predominant fatty acid in MGDG, DGDG, and PC, while linoleic acid was predominant in PE. Phosphatidylglycerol (PG) and phosphatidylinositol (PI) contained a high amount of palmitic acid. The ratio of (18:2 + 18:3) to 18:1 fatty acids in galactolipids in apple buds increased from August to April. ß-Sitosterol and sitosteryl ester were the predominant sterols in apple buds. An increase in sitosterol, a decrease in sitosteryl ester, and a decline in the ratio of free sterols to phospholipids occurred during budbreak in spring. A decrease in sitosterol was associated with bud expansion in spring.

scholarly journals Variation in Lipid Composition of Apples in Relation to Watercore

1992 ◽  
Vol 117 (5) ◽  
pp. 829-833 ◽  
Author(s):  
Shiow Y. Wang ◽  
Miklos Faust
Keyword(s):  
Fatty Acids ◽  
Malus Domestica ◽  
Lipid Composition ◽  
Normal Tissue ◽  
Membrane Lipids ◽  
Saturated Fatty Acids ◽  
Free Sterols ◽  
Affected Tissue

The glycolipids, phospholipids, and sterols were determined in normal and watercore-affected apple (Malus domestica Borkh. cv. Delicious). Fruit with watercore contained higher amounts of glycolipids, phospholipids, and sterols. The ratios of unsaturated to saturated fatty acids and (18:3) to (18:1 + 18:2) were lower in watercore-affected tissue than in normal tissue. The ratio of free sterols to phospholipids was higher, whereas the ratio of phosphatidylcholine to phosphatidylethanolamine was lower in watercore-affected apple. Membrane lipids were altered in watercore-affected fruit.

The fat soluble vitamin and fatty acid composition of colostrum, milk and fatty composition of erythrocyte membranes in calves supplemented with vitamin E and linoleic acid

1992 ◽  
Vol 1992 ◽  
pp. 112-112
Author(s):  
J R Scaife ◽  
Mabel Khombe ◽  
Fiona Paton ◽  
T Acamovic ◽  
D C MacDonald
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Vitamin E ◽  
Unsaturated Fatty Acids ◽  
Membrane Lipids ◽  
Essential Fatty Acids ◽  
Membrane Lipid ◽  
Erythrocyte Membranes ◽  
Neonatal Calf ◽  
Fat Soluble Vitamins

Colostrum and milk contain a number of important components such as immunoglobulins, fat soluble vitamins and essential fatty acids which have a marked influence on the health and welfare of the neonatal calf. The requirement of the neonatal calf for vitamin E is partly dependent on the dietary intake of polyunsaturated fatty acids (PUFA). Harris and Embree (1963) recommended that the ratio of vitamin E to linoleic acid (mg/g) should be between 1.5 to 2.5. Vitamin E is required to provide protection against peroxidative damage to the unsaturated fatty acids of plasma and membrane lipids and has been shown to play an important role in the development and maintenance of the immune system (Machlin and Bendich, 1987; Bendich, 1989). A study was conducted to examine the ratio of vit E to C18:2 in colostrum and milk and to investigate the effects of different dietary ratios of vit E to C18:2 erythrocyte membrane lipid composition.Twelve Hereford x Friesian cows were used in this experiment. Seventeen calves born to these cows, five sets of twins and seven singles, were randomly allocated to four treatment groups as follows. Group A -untreated controls; groups B and C - supplemented with different levels of vitamin E; group D -supplemented with vitamin E and C18:2.

scholarly journals LIPIDS IN SUBEPIDERMAL CORTICAL TISSUE OF `GOLDEN DELICIOUS' APPLE FRUIT

HortScience ◽  
1995 ◽  
Vol 30 (2) ◽  
pp. 191b-191
Author(s):  
Bruce D. Whitaker
Keyword(s):  
Fatty Acids ◽  
Membrane Lipids ◽  
Total Sterol ◽  
Apple Fruit ◽  
Cortical Tissue ◽  
Free Sterols ◽  
Beneficial Effects ◽  
Altered Metabolism ◽  
Apple Quality ◽  
Tlc Separation

Altered metabolism of membrane lipids has been proposed as a mechanism for the beneficial effects of postharvest calcium treatment on apple quality. A previous study showed that after transfer of apples stored 6 months at 0C to 20C, calcium-treated fruit exhibited slower loss of galactolipid and altered levels of sterol conjugates. The present study of lipids in “control” fruit was conducted as a prelude to further in-depth analyses of the effects of postharvest calcium and heat treatments on lipid metabolism in apples during and after cold storage. Neutral lipid, glycolipid (GL), and phospholipid (PL) fractions were obtained by column chromatography followed by TLC separation of GL and PL classes. The major GL were steryl glycosides (SG), acylated steryl glycosides (ASG), cerebrosides (CB), and mono- and digalactosyl diacylglycerols. Phosphatidylcholine (PC) > P-ethanolamine (PE) > P-irositol (PI) were the major PL. The fatty acids of PC and PE were quite similar, whereas those of PI were more saturated. CB included only 2-hydroxy fatty acids. Among the steryl lipids, free sterols > SG > ASG, with beta-sitosterol >90% of the total sterol in each.

Lipid Profile of Pig Tissues Contrasting in Meat Production

2019 ◽  
Vol 09 ◽  
Author(s):  
Vitaly A. Bekenev ◽  
Anatoly A. Arishin ◽  
Sergei N. Mager ◽  
Izolda V. Bolshakova ◽  
Natalia L. Tretyakova ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Fatty Acids ◽  
Linoleic Acid ◽  
Live Weight ◽  
Blood Lipid ◽  
Meat Production ◽  
Thoracic Vertebrae ◽  
Organoleptic Properties ◽  
Biochemical Characteristics

Background: Studies were carried out on two breeds of pigs - Pietrain (P), and Kemerovo (K), contrasting in composition of carcasses, and their hybrids. Objective: The purpose of this work was to establish the characteristics of the composition of lipids of intramuscular fat (IMF), back fat and serum, organoleptic qualities in animals of these breeds. Methods: Animals of 10 individuals in each group were fed on a standard feed and slaughtered with a live weight of 95-100 kg. The quality of carcasses, the biochemical characteristics of blood, the composition of fatty acids and cholesterol in meat and fat, and blood lipid peroxidation were determined. Results: Thickness on the back fat (BF) at the level of 6-7 thoracic vertebrae with a live weight of 100 kg was 35.8 ± 1.65 mm in pigs of breed K, in hybrids - 27.6 ± 1.06, and in breed P - 19, 6 ± 1.43 mm. IMF in pigs of breed K was almost 4.5 times greater than that of breed P. IMF K breed contained 2 times less cholesterol than in P (2.34 vs. 4.68%). In the IMF, K was 2 times less polyunsaturated fatty acids (PUFA), than P, 7.82 and 15.22%, linoleic acid, 6.74% and 12.42% respectively (p <0.005).The organoleptic properties of meat and salted back fat were significantly higher in breed K (P = 0.05). Conclusion: The data obtained allow us to establish priorities in the use of products of specific breeds of pigs, depending on medical requirements.

scholarly journals Explore the gene network regulating the composition of fatty acids in cottonseed

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lihong Ma ◽  
Xinqi Cheng ◽  
Chuan Wang ◽  
Xinyu Zhang ◽  
Fei Xue ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Linolenic Acid ◽  
Gene Network ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Accumulation Pattern ◽  
Time Points ◽  
Expression Characteristics

Abstract Background Cottonseed is one of the major sources of vegetable oil. Analysis of the dynamic changes of fatty acid components and the genes regulating the composition of fatty acids of cottonseed oil is of great significance for understanding the biological processes underlying biosynthesis of fatty acids and for genetic improving the oil nutritional qualities. Results In this study, we investigated the dynamic relationship of 13 fatty acid components at 12 developmental time points of cottonseed (Gossypium hirsutum L.) and generated cottonseed transcriptome of the 12 time points. At 5–15 day post anthesis (DPA), the contents of polyunsaturated linolenic acid (C18:3n-3) and saturated stearic acid (C18:0) were higher, while linoleic acid (C18:2n-6) was mainly synthesized after 15 DPA. Using 5 DPA as a reference, 15,647 non-redundant differentially expressed genes were identified in 10–60 DPA cottonseed. Co-expression gene network analysis identified six modules containing 3275 genes significantly associated with middle-late seed developmental stages and enriched with genes related to the linoleic acid metabolic pathway and α-linolenic acid metabolism. Genes (Gh_D03G0588 and Gh_A02G1788) encoding stearoyl-ACP desaturase were identified as hub genes and significantly up-regulated at 25 DPA. They seemed to play a decisive role in determining the ratio of saturated fatty acids to unsaturated fatty acids. FAD2 genes (Gh_A13G1850 and Gh_D13G2238) were highly expressed at 25–50 DPA, eventually leading to the high content of C18:2n-6 in cottonseed. The content of C18:3n-3 was significantly decreased from 5 DPA (7.44%) to 25 DPA (0.11%) and correlated with the expression characteristics of Gh_A09G0848 and Gh_D09G0870. Conclusions These results contribute to our understanding on the relationship between the accumulation pattern of fatty acid components and the expression characteristics of key genes involved in fatty acid biosynthesis during the entire period of cottonseed development.

Dairy product consumption is associated with a lowering of linoleic acid within serum triglycerides in adolescent females with overweight or obesity: a secondary analysis

2021 ◽  
pp. 1-30
Author(s):  
Raphaël Chouinard-Watkins ◽  
Melissa Calleja ◽  
Richard P Bazinet ◽  
Andrea R Josse
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Dairy Product ◽  
Secondary Analysis ◽  
Adolescent Females ◽  
Serum Fatty Acid ◽  
Dairy Fat ◽  
Product Consumption ◽  
Dairy Consumption ◽  
Dairy Product Consumption

Abstract Dairy fat is rich in saturated fatty acids such as palmitic acid (16:0) but low in linoleic acid (18:2n-6). The natural carbon 13 enrichment (δ13C) of 16:0 is higher in dairy fat than in most of the food supply. In adults, serum levels of pentadecanoic acid (15:0) and heptadecanoic acid (17:0) are recognized as biomarkers of dairy intake. In adolescents, no study has evaluated serum fatty acid levels or δ13C in response to chronic dairy consumption. The objectives of this study were to evaluate whether increased dairy product consumption can modulate 1) serum fatty acid levels and 2) 16:0 δ13C in adolescents with overweight/obesity who followed a 12-week weight management program. This secondary analysis of a RCT included two groups of adolescent females: recommended dairy (RDa; n=23) and low dairy (LDa; n=23). The RDa group was given 4 servings/d of dairy products while the LDa group maintained dairy intakes at ≤2 servings/d. Blood was sampled before and after the intervention. Lipids were extracted, separated, and fatty acids were quantified by gas chromatography. Isotope ratio mass spectrometry was used to assess 16:0 δ13C. There were no group differences on serum changes of 15:0 or 17:0. Within triglycerides, 18:2n-6 was lowered by 7.4% only in the RDa group (p = 0.040). The difference in delta 16:0 δ13C between the LDa and RDa group did not reach statistical significance (p = 0.070). Reductions in serum 18:2n-6 by dairy consumption could have positive health implications but more studies are needed to confirm this assertion.

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