Deep-frying purple potato Purple Majesty using sunflower oil: effect on the polyphenols, anthocyanins and antioxidant activity. Issue 5 (May 2022)

• Record Type: Journal Article
• Authors: Romano, Raffaele; Aiello, Alessandra; De Luca, Lucia; Pizzolongo, Fabiana; Durazzo, Alessandra; Lucarini, Massimo; Severino, Patricia; Souto, Eliana B.; Santini, Antonello
• Is Part Of: Heliyon. Volume 8:Issue 5(2022)
• Publication Date: 2022-05
• Subjects: Purple potato "Purple Majesty" -- Deep-frying -- Polyphenols -- Anthocyanins -- Antioxidant activity -- Sunflower oil; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2022.e09337
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: The potato is a root vegetable native to the Americas; it consists of the starchy tuber of the plant Solanum tuberosum . There are many varieties, and the flesh can have different colour ranging from yellow to red and purple. Coloured varieties have a denser texture and slightly nuttier, earthier flavour than other potatoes. The desirable quality characteristics of potatoes depends on the intended use, and the acceptability of raw potatoes is determined by size, shape, colour, and the quality of can be evaluated in terms of colour, flavour, and texture. Deep-frying is the century-old and it is among the most common cooking processes, still being used to prepare a variety of food products on both industrial and domestic scales. Frying the potatoes is among the tastiest and appreciated way to cook this vegetable. Purple fleshed potatoes are widely considered one of the best-tasting purple potatoes varieties, they have a nice taste and add colour to a meal. They are a source of beneficial health compounds which makes them interesting as functional food. The anthocyanins present in the Purple Majesty variety are interesting for their health promoting abilities, anti-oxidative activity, and even other health beneficial effects, e.g. anti-influenza virus activity, and anti-stomach cancer activity. The aim of this study has been to assess the effect of deep-frying of purple potato Purple Majesty using sunflower oil on the polyphenols, anthocyanins and to evaluate the antioxidant activity of the cooked matrix compared to the fresh one. The results seem to suggest that the healthy characteristics of this functional food are retained after the cooking by frying. Graphical abstract: Image 1 Highlights: Purple potato "Purple Majesty" is rich in antioxidants and anthocyanins. Deep frying in sunflower oil affects positively the antioxidant activity. The anthocyanins increase their amount in the frying time range. Polyphenols amount decreases during frying time. The ferulic and gallic acids seem to increase their amount after 48 h of frying. Abstract : Purple potato "Purple Majesty"; Deep-frying; Polyphenols; Anthocyanins; Antioxidant activity; Sunflower oil.