POSITIONAL DISTRIBUTION OF STEARIC-ACID AND OLEIC-ACID IN A TRIACYLGLYCEROL AND DIETARY CALCIUM-CONCENTRATION DETERMINES THE APPARENT ABSORPTION OF THESE FATTY-ACIDS IN RATS

被引:57
作者
BRINK, EJ
HADDEMAN, E
DEFOUW, NJ
WESTSTRATE, JA
机构
[1] Unilever Research Laboratorium, Vlaardingen
关键词
POSITIONAL FATTY ACID DISTRIBUTION; RATS; STEARIC ACID; FAT ABSORPTION; CALCIUM;
D O I
10.1093/jn/125.9.2379
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
In this study the effect of the positional distribution of stearic acid (18:0) and oleic acid (18:1) in a triacylglycerol on absorption of fat, energy and nutrients was investigated in young rats. in addition the effect of dietary calcium on these variables was studied. Forty rats were fed purified diets containing either a fat blend high in 2-oleoyl-distearate or a fat blend high in 1-oleoyl-distearate. Both diets were given at low (0.3 g/100 g) and high (1.0 g/100 g) dietary calcium concentrations. Total fat absorption, expressed as the percentage of fat intake, was significantly lower in rats fed 2-oleoyl-distearate compared with 1-oleoyl-distearate at both dietary calcium concentrations. When expressed as absolute figures, the lower fat absorption in rats fed 2-oleoyl-distearate compared with 1-oleoyl-distearate only reached statistical significance at the high dietary calcium concentration. The reduced absorption of total fat was mainly caused by the lower absorption of stearic acid. The percentage of, but not absolute, absorption of oleic acid and energy were lower in rats fed 2-oleoyldistearate. Absolute and percentage of calcium absorption were lower in rats fed 2-oleoyl-distearate compared with 1-oleoyl-distearate. Absolute and percentage of magnesium absorption were not significantly affected by the positional distribution of stearic acid and oleic acid in the triacylglycerol, but were decreased at a high dietary calcium concentration. We concluded that the lowered stearic acid absorption from 2-oleoyl-distearate compared with 1-oleoyl-distearate might have been due to the greater formation of insoluble calcium and magnesium soaps in the intestine.
引用
收藏
页码:2379 / 2387
页数:9
相关论文
共 29 条
[1]   CALCIUM BIOAVAILABILITY AND ABSORPTION - A REVIEW [J].
ALLEN, LH .
AMERICAN JOURNAL OF CLINICAL NUTRITION, 1982, 35 (04) :783-808
[2]   DIGESTIBILITY OF COCOA BUTTER AND CORN-OIL AND THEIR INFLUENCE ON FATTY-ACID DISTRIBUTION IN RATS [J].
APGAR, JL ;
SHIVELY, CA ;
TARKA, SM .
JOURNAL OF NUTRITION, 1987, 117 (04) :660-665
[3]  
BHATTACHARYYA AK, 1969, AM J CLIN NUTR, V22, P1161
[4]   INTESTINAL-ABSORPTION OF STEARIC-ACID AFTER CONSUMPTION OF HIGH-FAT MEALS IN HUMANS [J].
BONANOME, A ;
GRUNDY, SM .
JOURNAL OF NUTRITION, 1989, 119 (11) :1556-1560
[5]   EFFECT OF DIETARY STEARIC-ACID ON PLASMA-CHOLESTEROL AND LIPOPROTEIN LEVELS [J].
BONANOME, A ;
GRUNDY, SM .
NEW ENGLAND JOURNAL OF MEDICINE, 1988, 318 (19) :1244-1248
[6]   INTERACTION OF CALCIUM AND PHOSPHATE DECREASES ILEAL MAGNESIUM SOLUBILITY AND APPARENT MAGNESIUM ABSORPTION IN RATS [J].
BRINK, EJ ;
BEYNEN, AC ;
DEKKER, PR ;
VANBERESTEIJN, ECH ;
VANDERMEER, R .
JOURNAL OF NUTRITION, 1992, 122 (03) :580-586
[7]  
DENKE MA, 1993, J NUTR, V123, P1047
[8]  
DRENICK EJ, 1961, GASTROENTEROLOGY, V41, P242
[9]   ROLE OF DIETARY SATURATED FATTY-ACIDS ON LOWERING THE INCIDENCE OF HEART LESIONS IN MALE-RATS [J].
FARNWORTH, ER ;
KRAMER, JKG ;
THOMPSON, BK ;
CORNER, AH .
JOURNAL OF NUTRITION, 1982, 112 (02) :231-240
[10]  
HOFFMANN AF, 1963, BIOCHIM BIOPHYS ACTA, V790, P306