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lundi 17 septembre 2012

A great live fermented drink: watermelon!

Best buy in Perpignan France fresh watermelon juice from locally grown fruits
First buy a fresh non pasteurized non filtered watermelon juice. Or make it!  Let it fermented spontaneously at room temperature. Then after 24 h refrigerate it and begin to drink it after 12 hours. Obviously temperature humidity and other factors play a role in fermentation so the delay may vary... Adapt to your ecosystem. More for extreme low carb dieters the drink will change with time even at 6° Celsius because the sugar content decreases, so you can keep it in your frig... Try and do your own fermentation process. 
You got a fruit kefir! 
Health benefits of watermelon? the answer is yes, at least through L-citrulline! In watermelon Kefir the amount of L-Citrulline is less than in fresh juice because bacteria use free amino acids for their metabolism. But the amount is maily dependent of the cultivar of watermelon.

 2012 Jun;25(6):640-3. doi: 10.1038/ajh.2012.20. Epub 2012 Mar 8.

Watermelon extract supplementation reduces ankle blood pressure and carotid augmentation index in obese adults with prehypertension or hypertension.


Department of Nutrition, Food and Exercise Sciences, College of Human Sciences, Florida State University, Tallahassee, Florida, USA.



Ankle-brachial index (ABI) and ankle blood pressure (BP) are associated with increased carotid wave reflection (augmentation index, AIx). Oral L-citrulline and L-arginine from synthetic or watermelon sources have reduced brachial BP, aortic BP, and aortic AIx. A directly measured carotid AIx (cAIx) rather than aortic AIx has been proposed as a better measurement of central AIx. We evaluated the effects of watermelon extract on ankle BP and cAIx in individuals with normal ABI and prehypertension or stage 1 hypertension.


Ankle and brachial systolic BP (SBP), diastolic BP (DBP), mean arterial pressure (MAP), cAIx, ABI, and heart rate (HR) were evaluated in the supine position in 14 adults (11 women/3 men, age 58 ± 1 years) with prehypertension or stage 1 hypertension (153 ± 4 mm Hg). Subjects were randomly assigned to 6 weeks of watermelon extract supplementation (L-citrulline/L-arginine, 6 g daily) or placebo followed by a 2-week washout period and then crossover.


Ankle and brachial SBP (-11.5 ± 3.8 and -15.1 ± 2.8 mm Hg), DBP (-7.8 ± 2.3 and -7.6 ± 1.8 mm Hg), and MAP (-9.8 ± 2.6 and -7.3 ± 1.8 mm Hg), and cAIx (-8.8 ± 2.6 %) decreased significantly (P < 0.05) after watermelon supplementation compared to placebo. Watermelon supplementation had no significant effect (P > 0.05) on ABI and HR.


This study shows that watermelon extract supplementation reduces ankle BP, brachial BP, and carotid wave reflection in obese middle-aged adults with prehypertension or stage 1 hypertension and normal ABI, which may reflect improved arterial function.

Delicious whole fermented non pasteurized watermelon juice!  

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