Rethinking Polyphenol Intake in Modern Lifestyles: From Food Processing to Precision Nutrition
We are pleased to announce that Prof. Bhimu Patil from the Texas A&M University, USA, will join Polyphenols Applications 2026 and give a presentation entitled Rethinking Polyphenol Intake in Modern Lifestyles: From Food Processing to Precision Nutrition.
Maintaining a healthy lifestyle requires consuming bioactive compounds for their health benefits. Advances in food science, agriculture, and information technology have significantly enhanced our understanding of food bioactive compounds, contributing to the growing popularity of high-value health products. However, delivering suitable amounts and types of bioactives for a healthy lifestyle poses challenges for food processing. Meta-analyses and randomized clinical trials provide evidence that polyphenols prevent cardiometabolic diseases, obesity, gut inflammation, nonalcoholic fatty liver disease, and diabetes. However, delivery of polyphenols faces challenges, including their extractability, chemical stability, solubility, and binding within the food matrix. Moreover, the harsh conditions in the gastrointestinal tract reduce their oral bioavailability. Revisiting polyphenols with improved extractability, quality assessment, updated analytical methods, and food processing techniques is crucial for adequate polyphenol intake.
In the context of these challenges, we explored various fruit crops, specifically blueberries, tomatoes, and citrus fruits, with the aim of rethinking polyphenol intake in modern lifestyles. Our findings showed that frozen blueberries contain comparable or higher anthocyanin levels than fresh blueberries and are more cost-effective. To assess the impact of extractability, processing, and storage on blueberry juice, we found that continuous-flow high-pressure homogenization enhances the stability of anthocyanins and ascorbic acid during cold storage. In our current studies, we analyzed tomato-derived juices from retailers marketed as health beverages. Results demonstrated that minimally processed products, in contrast to ultra-processed products, exhibit sixfold higher levels of the predominant polyphenols, from 23 to 131 mg L⁻¹, including chlorogenic acid (11.889 mg L⁻¹), rutin (29.422 mg L⁻¹), and naringenin (14.601 mg L⁻¹). Consequently, producing processed products marketed for their polyphenol-associated health benefits necessitates careful consideration of processing parameters. To address the need for analytical advancements, a rapid, versatile UHPLC-DAD gradient method was developed that separates 31 major polyphenols in just 15.36 minutes. The method accurately validated the separation of three coumaric acid isomers (o-, m-, and p-) and 28 other polyphenols in a single run. The method was further quantitatively validated for blueberries, cranberries, and strawberries, as well as for whole fruits (specifically apples and tomatoes) and fruit sections from oranges, pitaya, and pomegranate. This method is also applicable for testing polyphenols in processed and unprocessed foods. In our earlier studies, we demonstrated citrus flavonoids’ effectiveness against colon, pancreatic, and oral cancer cell lines, and found that flavonoid content did not consistently correlate with product price or antioxidant levels. These wide-ranging studies establish a systematic approach that, when combined with clinical evidence, will potentiate advancements in precision nutrition. This research was supported by USDA-NIFA-2024-51181-43464 through the National Center of Excellence at the Vegetable and Fruit Improvement Center of Texas A&M University.
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