Effects of cold storage on the total phenolic content and antioxidant activity of pomegranate juice
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Pomegranate juice has become more popular because of attribution of antioxidant action and phenolic compounds. As there is an increasing concern about potential health benefits of ellagic acid, it is of great interest to evaluate effects of different processing techniques on ellagic acid contents of pomegranate juices. The aim of the present work is to study the effect of storage to obtain different pomegranate juices on phenolic acids such as ellagic acid, total phenolic compounds and antioxidant activity. Pomegranate juices were prepared by three different processing techniques which are called cloudy raw, clear and concentrated pomegranate juice. All pomegranate juice samples were stored at +4°C for 150 days in amber glass bottles. Significant changes in amount of phenolic compounds were observed in each juice during storage. Total phenolic substances of cloudy, clear and concentrated pomegranate juice, respectively 2.2%, 5.3% and 6.1% reduction have been identified but cloudy and clear pomegranate juice samples in the amount of ellagic acid have been determined respectively 49.1% and 103.6% increase. Cloudy and clear pomegranate juice samples in the amount of total antioxidant activity have been determined respectively 13.7% and 12.2% reduction. Samples which had high amount of total phenolic compounds at the same time exhibiting the highest antioxidant activity determined. Variations were more significant in clear juice compared to the increase in cloudy pomegranate juice. Besides, a slight decrease observed in clear pomegranate juice from concentrate. These may be due to the contribution of free ellagic acid to development of insoluble sediments in pomegranate juice during storage.
Açıklama
Valorial l'Aliment de Demain;CNRS;PONAN - Pole Alimentation et Nutrition;INRA;Pays de la Loire;Nantes Metropole Communaute Urbaine
6th International CIGR Technical Symposium - Towards a Sustainable Food Chain: Food Process, Bioprocessing and Food Quality Management -- 18 April 2011 through 20 April 2011 -- Nantes -- 89672
6th International CIGR Technical Symposium - Towards a Sustainable Food Chain: Food Process, Bioprocessing and Food Quality Management -- 18 April 2011 through 20 April 2011 -- Nantes -- 89672
Anahtar Kelimeler
Antioxidant Activity, Cold Storage, Ellagic Acid, Pomegranate, Total Phenolic Compounds
Kaynak
6th International CIGR Technical Symposium - Towards a Sustainable Food Chain: Food Process, Bioprocessing and Food Quality Management
WoS Q Değeri
Scopus Q Değeri
N/A
