Polyphenol compounds found in berry fruits, in particular flavonoids, have been associated with health benefits including improvement in cognition and neuronal function with aging. Concord grape juice contains polyphenols, including anthocyanins and flavanols, and previous research has shown improvement in a number of human health conditions with grape juice supplementation. In the current study, older adult subjects with mild cognitive impairment consumed Concord grape juice or placebo for 16 weeks and were administered assessments of memory function and brain activation pre- and postintervention. Participants who consumed grape juice showed reduced semantic interference on memory tasks. Relatively greater activation in anterior and posterior regions of the right hemisphere was also observed with functional magnetic resonance imaging in the grape juice treated subjects. These findings provide further evidence that Concord grape juice can enhance neurocognitive function in older adults with mild memory decline.
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Article Synopsis
- A study was conducted on four common seedless grape varieties in China—Kyoho, Summer Black, Moldovan, and Sweet Sapphire—to compare their sensory properties and overall quality against commercially available Concord juice.
- Kyoho and Sweet Sapphire had optimal Brix-acid ratios, while Kyoho also showed the highest aroma intensity with floral and fruity notes compared to Sweet Sapphire's grassy scent.
- Concord juice emerged as the best option for color and aroma, with recommendations for blending Summer Black with Kyoho to enhance the overall quality of grape juice.
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