EFFECTS OF COOKING METHODS ON THE ANTHOCYANIN LEVELS AND ANTIOXIDANT ACTIVITY OF A LOCAL TURKISH SWEETPOTATO [Ipomoea batatas (L.) LAM] CULTIVAR HATAY KIRMIZI: BOILING, STEAMING AND FRYING EFFECTS

Küçük Resim Yok

Tarih

2012

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Soc Field Crop Sci

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The study was conducted on the anthocyanin (TA) level and antioxidant activity (AA) of a local genotype of sweetpotato (Hatay Kirmizi) and heating process effects including boiling, steaming, frying on TA and AA levels. The anthocyanin calibration graph of standard cyanidin-3-glucoside gave linear equation (y=0.0113x+0.0045; R-2 = 0.9986). Anthocyanin level of sweetpotato Hatay Kirmizi (as cyanidin-3-glucoside (C3G) equivalent) was determined as 11992 +/- 15.86 mg/100g) (n=8) (p <= 0.05). Anthocyanins were detected as 13767 8.94 mg/100g; 24756 +/- 6.70 mg/100g; 6755 +/- 10.22 mg/100g in boiled, steamed and fried sweetpotatoes, respectively (n=2) (p <= 0.05). The total anthocyanins increased as 1.14 fold after boiling process and increased 3.22 fold after steaming process and decreased 1.78 fold after frying process (p <= 0.05). It was determined that steaming process, was the most effective among the heat-treated sweetpotatoes (HTSPs). Antioxidant activities of the HTSPs was 78.76%, 89.67%, 97.92% and 57.89% (as radical inhibition percent), respectively. With using steaming process, radical inhibition percent increased 1.24 fold. Tubers of sweetpotato Hatay Kirmizi can be consumed not only steamed > boiled > fried forms but also can be processed into food products, such as muffins, cookies, biscuits, breakfast foods with longer shelf-life, and improved characteristics. It was proposed that sweetpotato Hatay Kirmizi can be processed into flour and used as a thickener, antioxidant enhancer and color source in industrial powder soups, gravy, extruder snacks, and some bakery products.

Açıklama

Anahtar Kelimeler

Sweet potato, anthocyanin, antioxidant activitiy, Hatay Kirmizi

Kaynak

Turkish Journal of Field Crops

WoS Q Değeri

Q3

Scopus Q Değeri

Cilt

17

Sayı

1

Künye