Original Article

EFFECT OF SOME PARAMETERS ON THE EXTRACTION AND DECOMPOSITION OF ASCORBIC ACID IN THE ROSEHIP

  • Olcay SENDIL

Received Date: 22.12.2005 Accepted Date: 10.05.2006 Turk J Pharm Sci 2006;3(2):61-72

Abstract The dependence of grain size, solvent volume, temperature and time on the extraction and decomposition of ascorbic acid (AA) in rosehip was studied. Dried rosehip fruits were used as samples after their seeds have been removed, ground, and separated according to different sizes of grains by a sifter. The extracted ascorbic acid (vitamin C) quantity was determined by iodometric method. The results were compared with the results of synthetic ascorbic acid solutions under the same experimental conditions. It was found that the decomposition of synthetic ascorbic acid was faster than ascorbic acid obtained from rosehip. It has been concluded that the amount of ascorbic acid that was extracted doesn’t depend on the grain size of rosehip samples. The extraction of ascorbic acid increased depending on the volume of solvent and the temperature. If the same waiting period is taken into consideration, ascorbic acid in the rosehip solution decreases considerably slowly when compared to ascorbic acid in the synthetic solutions. Özet Tanecik büyüklügüne, çözücü hacmine sicaklik ve zamana bagli olarak kusburnundaki askorbik asidin (AA) ekstraksiyonu ve bozunmasi çalisildi. Çekirdekleri ayiklanmis, ufalanmis,ve bir elekle farkli boyutlara ayrilmis kuru kusburnu meyveleri numune olarak kullanildi. Ekstrakte edilen askorbik asit iyodometrik metotla tayin edildi. Sonuçlar ayni deneysel sartlar altinda çalisilan sentetik askorbik asit çözelti sonuçlari ile karsilastirildi. Sentetik numunelerde askorbik asitin bozunmasinin kusburnundan elde edilen askorbik asitten daha hizli oldugu bulundu. Ekstrakte olan askorbik asit miktarinin kusburnu örneklerinin tanecik boyutuna bagli olmadigi tespit edildi. Sicaklik ve çözücü hacmine bagli olarak askorbik asit ekstraksiyonu artti. Bekleme süresi göz önüne alindiginda kusburnu çözeltilerindeki askorbik asit sentetik çözeltilerdeki askorbik asit ile karsilastirildiginda çok daha yavas bozunmaktadir.

Keywords: Ascorbic acid; Rosa canina; Rosehip