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Table 3 Effects of interesterified fats in the lipemic model

From: Effects of stereospecific positioning of fatty acids in triacylglycerol structures in native and randomized fats: a review of their nutritional implications

Fat class

Reference

Study population

Study design

Diet

Endpoints

Palm olein (sn-1/3 C16:0) vs Betapolâ„¢/interesterified palm olein (sn-2 C16:0)

Zampelas et al. [121]

16 healthy men

Mean age: 24.8 ± 2.6 y

Mean BMI: 22.7 ± 2.4 kg/m2

Randomized cross-over

2-wk wash-out

6 hr postprandial event

Bleeds at -10, 0, 15, 30, 45, 60, 90, 120, 180, 240, 300, 360 min

Liquid meal: Meal replacement diet (Carnation Slender) + 40 g test fat + 200 ml water

Fat clearance: no difference

Glucose, insulin and GIP: no difference

Palm olein (sn-1/3 C16:0) vs interesterified palm olein (sn-2 C16:0)

Yli-Jokipii et al. [19]

11 women

age: 18–45 y

BMI: 18.5–25 kg/m2

Double-blind

Randomized cross-over

4-wk wash-out

6 hr postprandial event

Identical FAC with 32.8% of 16:0

Positional distribution: 16:0 in sn-1/3 for PO and in sn-2 for interesterified PO

Liquid fat load-55 g/m2 BSA

Fat clearance: no difference

IAUC TAG: sn-1/3 C16:0 > sn-2 C16:0

Insulin: sn-1/3 C16:0 <sn-2 C16:0

Chylomicron-TAG structure: similar to diet TAG structure

VLDL-TAG structure: similar for both test meals but dissimilar to diet origin.

Butter vs Fat replacers (Paselliâ„¢ vs Simplesseâ„¢ vs Olestraâ„¢)

Mattes [118]

2 men and 15 women

Age: 28.5 ± 1.9 y BMI:26.1 ± 1.4 kg/m2

Randomized crossover

80 g almond evening meal prior to postprandial day

Modified sham feeding (MSF) for oral stimulation

0 h: baseline bleed

+10 min: 50 g safflower oil capsule

+ 20 min: blood drawn

+ every 3 min for 60 min: MSF

+ every 15 min for 60 min: MSF

+ bleeds at 2.5 h, 4.5 h, 6.5 h, 8.5 h after baseline

MSF @ 2 hr after baseline.

Mashed potato alone as control.

Test fat (= 50 g) fed in capsules with mashed potato.

AUC TAG: Butter > potato = Paselliâ„¢ = No MSF > Simplesseâ„¢ > Olestra

Serum 18:1, apo B48, apo B 100: no treatment effects

Interesterified C18:0-rich sunflower oil vs C18:1-rich HOSO

Sanders et al. [47]

16 healthy subjects: 11 men, 5 women

mean age (yr): 25.5

mean BMI (kg/m2): 23.2

Randomized crossover

7 hr postprandial events

0,1,2,4 and 5 hr drawn capillary blood

3 and 7 hr venous blood

Test fat : 90 g vs Low fat = 10 g

Test meal challenge: cottage pie + banana milkshake with

total nutrient value of 5.2 MJ, 37 g protein

Fat-free lunch (1.7 MJ) after 3 hr

FVIIa: sn-2 C18:1 > sn-2 C18:0

Plasma TAG: sn-2 C18:1 > sn-2 C18:0

C18:0-rich cocoa butter (sn-1/3 C18:0) vs C18:1-rich HOSO (sn-2 C18:1) vs randomized C18:0-rich Salatrimâ„¢ (sn-2 C18:0)

Sanders et al. [48]

17 men and 18 women

mean age (yr): men 51.3; women 46.2

mean BMI (kg/m2): men 25.9 and women 26.5

Randomized crossover

3 wk feeding per phase

with 1 wk wash-out

0, 3 and 6 hr postprandial events

Test fat:30 g

Test meal: muffin + strawberry milkshake

Total nutrient value: 50 g fat, 17 g protein, 48 g carbohydrate

FVIIa: sn-1/3 C18:0 = sn-2 C18:1 > sn-2 C18:0

Plasma TAG: sn-1/3 C18:0 = sn-2 C18:1> sn-2 C18:0

C18:0 rich cocoa butter (sn-1/3 C18:0) vs

interesterified cocoa butter (sn-2 C18:0)

Sanders et al. [126]

17 healthy males

mean age: 38.2 yr

mean BMI: 24.5 kg/m2

Randomized crossover

3 wk feeding per phase

≥ 1 wk wash-out

1,2,4 and 5 h postprandial events

Test meal: milkshake + muffin

Nutrient value: 3.13 MJ, 16 g protein+ 50 g carbohydrate + 50 g test fat

3 h post-meal: fruit and low-fat yoghurt

FVIIa: sn-1/3 C18:0 <sn-2 C18:0

Plasma TAG: sn-1/3 C18:0 > sn-2 C18:0

C18:0 rich cocoa butter (sn-1/3 C18:0) vs

Interesterified C18:0-rich sunflower oil (sn-2 C18:0)

Berry & Sanders [128]

6 healthy males

age: 20–40 yr

Randomized crossover

6 hr postprandial event

Test fat: 50 g

FVIIa: sn-1/3 C18:0 <sn-2 C18:0

Plasma TAG: sn-1/3 C18:0 > sn-2 C18:0

Unrandomized shea butter (sn-1/3 C18:0) vs randomized shea butter (sn-2 C18:0)

Berry & Sanders [22]

16 healthy males

Randomized crossover trial

Test fat: 50 g

Test meal: muffins

FVIIa: sn-1/3 C18:0 = sn-2 C18:0

Plasma TAG: sn-1/3 C18:0 = sn-2 C18:0

Unrandomized shea butter (sn-1/3 C18:0) vs C18:1-rich HOSO (sn-2 C18:1)

Berry & Sanders [129]

13 healthy males

age: 20–43 yr

Randomized crossover trial

6 hr postprandial event

Test fat: 50 g

FVIIa: sn-2 C18:1 > sn-1/3 C18:0

Plasma TAG: sn-2 C18:1 > sn-1/3 C18:0

Interesterified fatty acids

sn-2 C18:0 (n = 16)

sn-2 C16:0 (n = 16)

sn-2 C18:2 (n = 16)

sn-2 C18:1 (n = 16)

sn-2 C14:0+C16:0 (n = 8)

sn-2 trans C18:1(n = 15)

Tholstrup et al. [131]

16 healthy men

age: 21 to 28 yr

BMI: 19.5 to 28.1 kg/m2

Crossover design

≥ 3 wk wash-out

2 days familiarization

Total fat energy-50.6%

SFA:PUFA:MUFA = 40:41:19

Interesterified fatty acids targeted at ≈ 43% by wt

Single meal fat-loading:1 g/kg BW

Fat clearance: C18:0 = C16:0 < C16:0+C14:0 <cis and trans C18:1 < C18:2

LpL: C18:0 = C16:0 = C16:0+C14:0 <cis C18:1 <trans C18:1 < C18:2

CETP: ↑ for trans C18:1 after 4 h; ↓ for C18:0 and C18:2 until 4 h; no change for the rest.