کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
35653 | 45100 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Proteolytic activity in enzymatic extracts from Carica papaya L. cv. Maradol harvest by-products Proteolytic activity in enzymatic extracts from Carica papaya L. cv. Maradol harvest by-products](/preview/png/35653.png)
Proteolytic activity and the cysteine protease profile were determined for enzymatic extracts (EE) from Carica papaya L. cv. Maradol harvest by-products (stems, unripe fruit, petioles and leaves). The proportion of each by-product type in the sampled plantation was calculated. Polypeptide bands were identified by SDS–PAGE for each EE and molecular weight calculated for the cysteine proteases. Leaf and fruit tissue had the highest protein contents of the by-products. Leaf tissue also produced the highest total EE yield. All the SDS–PAGE gels for the EE’s exhibited an approximately 23 kDa band probably corresponding to papain. The zymography profiles of the EE’s were similar, with bands at approximately >202.8, 76.8, 55.4 and 46.5 kDa. The fruit EE had the highest specific proteolytic activity and the leaf EE the lowest. Fruit and stem by-products are the most promising for proteolytic enzyme extraction.
Journal: Process Biochemistry - Volume 44, Issue 1, January 2009, Pages 77–82