Enzyme activities and pH variations in the digestive tract of gilthead sea bream
Two investigations were carried out with 150 g gilthead sea bream Sparus aurata to determine the relative activity of six digestive enzymes (pepsin, trypsin, chymotrypsin, carboxypeptidase A, carboxypeptidase B and amylase) and the pH variation in the lumen of different parts of the gut of fish fed...
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| Veröffentlicht in: | Journal of fish biology 2003-05, Vol.62 (5), p.1033-1043 |
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| container_title | Journal of fish biology |
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| creator | Deguara, S. Jauncey, K. Agius, C. |
| description | Two investigations were carried out with 150 g gilthead sea bream Sparus aurata to determine the relative activity of six digestive enzymes (pepsin, trypsin, chymotrypsin, carboxypeptidase A, carboxypeptidase B and amylase) and the pH variation in the lumen of different parts of the gut of fish fed one or two meals per day. Pepsin activity was found exclusively in the stomach, whereas activities of the other enzymes studied were found in all regions of the gut, including the stomach. The lack of localization of enzyme production in the digestive tract of S. aurata is similar to many other species as reported in the literature. The pH variations found in the different regions of the gut could be explained by general digestive physiology following the flow of digesta along the digestive tract. The range of pHs recorded in the various regions of the gut were generally outside the cited optima for many digestive proteases in this species. |
| doi_str_mv | 10.1046/j.1095-8649.2003.00094.x |
| format | Article |
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Pepsin activity was found exclusively in the stomach, whereas activities of the other enzymes studied were found in all regions of the gut, including the stomach. The lack of localization of enzyme production in the digestive tract of S. aurata is similar to many other species as reported in the literature. The pH variations found in the different regions of the gut could be explained by general digestive physiology following the flow of digesta along the digestive tract. The range of pHs recorded in the various regions of the gut were generally outside the cited optima for many digestive proteases in this species.</description><identifier>ISSN: 0022-1112</identifier><identifier>EISSN: 1095-8649</identifier><identifier>DOI: 10.1046/j.1095-8649.2003.00094.x</identifier><identifier>CODEN: JFIBA9</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Biological and medical sciences ; digestion ; enzymes ; Enzymes. Coenzymes. Vitamins. 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Pepsin activity was found exclusively in the stomach, whereas activities of the other enzymes studied were found in all regions of the gut, including the stomach. The lack of localization of enzyme production in the digestive tract of S. aurata is similar to many other species as reported in the literature. The pH variations found in the different regions of the gut could be explained by general digestive physiology following the flow of digesta along the digestive tract. The range of pHs recorded in the various regions of the gut were generally outside the cited optima for many digestive proteases in this species.</description><subject>Biological and medical sciences</subject><subject>digestion</subject><subject>enzymes</subject><subject>Enzymes. Coenzymes. Vitamins. Pigments</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>intestine</subject><subject>Marine</subject><subject>Metabolisms and neurohumoral controls</subject><subject>Sparus aurata</subject><subject>Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><issn>0022-1112</issn><issn>1095-8649</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOwzAQRS0EEuXxD97ALsWOHSeW2EApFFQBCx5La-I44JImxU6h5etxSAVbVmNpzr0eHYQwJUNKuDiZhSGTKBNcDmNC2JAQIvlwtYUGv4ttNCAkjiNKabyL9ryfdRCTbIDux_XXem4w6NZ-2NYaj6Eu8GKCP8BZaG1Te2xr3L4aXNgX4wNmcOsCj5sSv9gqbKDA3gDOnYH5AdopofLmcDP30ePl-GE0iaZ3V9ejs2mkeSJ5VOpUEyIo00ZLkQghICvAgA5lAvKY5wBM5zRNJSGaZhkvCpOnCQgtyrTI2D467nsXrnlfhrvU3Hptqgpq0yy9opImGeMsgFkPatd470ypFs7Owa0VJapTqGaqM6U6U6pTqH4UqlWIHm3-AK-hKh3U2vq_PJdxlsQycKc992krs_53v7q5PA-PEI_6uPWtWf3Gwb0pkbI0Uc-3V-p5wpOnh9FIXbBv7rGUYw</recordid><startdate>200305</startdate><enddate>200305</enddate><creator>Deguara, S.</creator><creator>Jauncey, K.</creator><creator>Agius, C.</creator><general>Blackwell Science Ltd</general><general>Blackwell</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>200305</creationdate><title>Enzyme activities and pH variations in the digestive tract of gilthead sea bream</title><author>Deguara, S. ; Jauncey, K. ; Agius, C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4594-fc7c00613cec965666a8daeacead6ab24baa3cb177900c1884ddeb75a6c6f7d83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Biological and medical sciences</topic><topic>digestion</topic><topic>enzymes</topic><topic>Enzymes. Coenzymes. Vitamins. Pigments</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>intestine</topic><topic>Marine</topic><topic>Metabolisms and neurohumoral controls</topic><topic>Sparus aurata</topic><topic>Vertebrates: anatomy and physiology, studies on body, several organs or systems</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Deguara, S.</creatorcontrib><creatorcontrib>Jauncey, K.</creatorcontrib><creatorcontrib>Agius, C.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of fish biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Deguara, S.</au><au>Jauncey, K.</au><au>Agius, C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enzyme activities and pH variations in the digestive tract of gilthead sea bream</atitle><jtitle>Journal of fish biology</jtitle><date>2003-05</date><risdate>2003</risdate><volume>62</volume><issue>5</issue><spage>1033</spage><epage>1043</epage><pages>1033-1043</pages><issn>0022-1112</issn><eissn>1095-8649</eissn><coden>JFIBA9</coden><abstract>Two investigations were carried out with 150 g gilthead sea bream Sparus aurata to determine the relative activity of six digestive enzymes (pepsin, trypsin, chymotrypsin, carboxypeptidase A, carboxypeptidase B and amylase) and the pH variation in the lumen of different parts of the gut of fish fed one or two meals per day. 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| ispartof | Journal of fish biology, 2003-05, Vol.62 (5), p.1033-1043 |
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| language | eng |
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| source | Wiley Online Library All Journals |
| subjects | Biological and medical sciences digestion enzymes Enzymes. Coenzymes. Vitamins. Pigments Fundamental and applied biological sciences. Psychology intestine Marine Metabolisms and neurohumoral controls Sparus aurata Vertebrates: anatomy and physiology, studies on body, several organs or systems |
| title | Enzyme activities and pH variations in the digestive tract of gilthead sea bream |
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