Hesperidin

A research team has solved the mystery of a novel clove-like off-flavor in orange juice, the cause of which was previously unknown. The study proves for the first time that the undesirable flavor note is due to the odorant 5-vinylguaiacol. As the results of the study show, the substance is mainly produced during the pasteurization process when residues of a cleaning agent react with a natural orange juice component under the influence of heat. A research team led by the Leibniz Institute for Food Systems Biology at the Technical University of Munich has solved the mystery of a novel clove-like off-flavor in orange juice, the cause of which was previously unknown. The study proves for the first time that the undesirable flavor note is due to the odorant 5-vinylguaiacol. As the results of the study show, the substance is mainly produced during the pasteurization process when residues of a cleaning agent react with a natural orange juice component under the influence of heat. This is not the first time that the orange juice industry has had to contend with clove odor. So far, 4-vinylguaiacol has been considered the main cause of this undesirable flavor note, which is particularly abundant in orange juices that have been stored for a long time. The quantitative determination of this odorant has therefore long been an established part of routine quality controls. Eva Bauersachs, PhD student at the Leibniz Institute in Freising and first author of the study, explains: "Recently, however, we have received reports of orange juice samples that had a pronounced clove odor despite a low concentration of 4-vinylguaiacol. We therefore asked ourselves which other odorants contribute to this undesirable off-flavor." On the trail of off-flavors To investigate this question, the research group led by Martin Steinhaus, head of the Food Metabolome Chemistry research group at the Leibniz Institute, carried out extensive investigations in cooperation with the Professorship of Functional Phytometabolomics and the Chair of Food Chemistry and Molecular Sensory Science at the Technical University of Munich. The aim was to identify the odorants that cause the previously unexplained off-flavor and to elucidate their origins. Using techniques such as gas chromatography-olfactometry and aroma extract dilution analysis, the team identified the odorant 5-vinylguaiacol as the source of the off-flavor in an orange juice with a pronounced clove odor. The presence of this substance in orange juice was previously unknown. Compared to 4-vinylguaiacol, it even proved to be more odor-active in five out of six commercially available orange juices with a clove-like off-flavor. Natural component + cleaning agent residue + heat = off-flavor Further studies suggested that 5-vinylguaiacol is formed during pasteurization when the characteristic orange juice component hesperidin reacts with peracetic acid. Peracetic acid is used as a cleaning agent for cleaning-in-place (CIP) in the fruit juice industry, among others. "Inadequate rinsing of the machines after the CIP process could therefore have led to contamination of the orange juice with peracetic acid and caused the formation of 5-vinylguaiacol during further processing," says principal investigator Martin Steinhaus. Based on the new scientific findings, the team recommends that orange juice processing companies should no longer use peracetic acid as a cleaning agent.

MISSION, Kan., Dec. 11, 2023 /PRNewswire/ -- (Family Features) Bolstering your immune system during winter, when coughs and colds seem to take control, is a must for the entire family. Supporting your wellness can start in a simple place – with the foods you eat and drink. Continue Reading Orange Juice and Coconut Chickpea Soup Superfruit Breakfast Smoothie Consider an easy choice for any season like Florida Orange Juice, which can help you and your loved ones get the vitamins and minerals you need all winter long. With 100% of the daily recommended value of vitamin C in every 8-ounce serving along with key nutrients like potassium and magnesium, there's a reason it's referred to as the "Original Wellness Drink." With no added sugar or artificial flavor, it provides the benefits you need without the additives you don't. It contains natural sugar from the whole fruit for a delicious solution that's one of nature's nutrient-rich foods with vitamins, minerals and phytonutrients. Plus, it's easy to use as a nutritional ingredient in wintertime favorites like this comforting Orange Juice and Coconut Chickpea Soup or to start your day strong with a Superfruit Breakfast Smoothie. Paired with a healthy lifestyle, 8 ounces of 100% orange juice may help support a healthy immune system as an excellent source of vitamin C and a good source of vitamin D in fortified juices. Vitamin C is commonly associated with helping maintain and strengthen healthy immune systems by protecting cells and promoting the production and function of immune cells. Meanwhile, vitamin D also plays an important role in regulating immune response by helping immune cells fight off bacteria and viruses. "Safeguarding your health against the spread of illness is important year-round, especially during colder months when reports of cold and flu increase," said Dr. Rosa Walsh, director of scientific research at the Florida Department of Citrus. "A key step in supporting your immune system is maintaining a well-balanced diet that is high in essential nutrients. Incorporating an 8-ounce glass of 100% orange juice can help you meet the recommended daily value of vitamin C and support your hydration." Beneficial plant compounds, like those in Florida Orange Juice, along with flavonoids and colorful carotenoids work to support the immune system by fighting inflammation and helping cells communicate, which can help strengthen immune responses when encountering infections. Additionally, 100% orange juice is a source of phytonutrients like hesperidin, which has been shown in clinical studies to have antioxidant-like properties, heart health benefits and may help reduce inflammation. Hesperidin has also been linked with benefits related to cognitive function, immune system function and bone health. To find more information and immunity-boosting winter recipes, visit FloridaJuice.com. Orange Juice and Coconut Chickpea Soup Servings: 8 1 tablespoon olive oil 1 cup diced yellow onion 1 red bell pepper, diced 1 1/2 cups diced carrots 1 1/2 teaspoons kosher salt 3 cloves garlic, finely grated 1/2 teaspoon ground cardamom 1 quart vegetable broth 1 can (14 ounces) light coconut milk 1 can (14 ounces) chickpeas, drained and rinsed 1/2 cup Florida Orange juice chopped cilantro (optional) In medium saucepan over medium high, heat olive oil until it shimmers. Add onions, bell pepper, carrots and salt; cook until onions are translucent, 5-7 minutes. Add garlic and cardamom; cook 1-2 minutes, or until garlic is fragrant. Do not brown. Add vegetable broth, coconut milk and chickpeas; bring to simmer. Decrease heat to low and cook until carrots are tender, about 10 minutes. Add orange juice, remove from heat and stir. Taste and adjust seasoning as desired. Serve garnished with cilantro, if desired. Superfruit Breakfast Smoothie Servings: 2 8 ounces Florida Orange Juice 4 ounces dark sweet cherries 2 ounces pomegranate juice In blender, puree orange juice, cherries and pomegranate juice then serve. Michael French [email protected] 1-888-824-3337 editors.familyfeatures.com About Family Features Editorial Syndicate A leading source for high-quality food, lifestyle and home and garden content, Family Features provides readers with topically and seasonally relevant tips, takeaways, information, recipes, videos, infographics and more. Find additional articles and information at Culinary.net and eLivingToday.com. SOURCE Family Features Editorial Syndicate