Abstract
The digestive enzyme activities of Pacific bluefin tuna Thunnus orientalis were evaluated for specific activity and characterized for pH and temperature optima in crude extracts of stomach, caecal mass, and proximal, middle and distal intestine. A higher level of alkaline proteolytic activity was detected in the caecal mass than in the proximal intestine. Total alkaline proteases, trypsin, chymotrypsin and leucine aminopeptidase (LAP) were tested. The temperature and pH analyses showed that proteolytic activity as well as lipase were maximal in the alkaline range, with a maximum at pH 9.0 and at temperatures between 35 and 60°C, except for the pepsin, which showed maximum activity at the same temperatures but in the acid range (pH 3.0). The α-amylase activity showed a broader range in activity, both for pH and temperature, with higher activity over the alkaline pH values and higher temperature. The lipase activity seems to be nondependent on bile salts under our assay conditions, resulting in a significant activity reduction in the presence of bile salts. This knowledge will allow the development of a gastrointestinal model (everted intestine) where food or feed will be hydrolysed with the fish’s own enzymes, a project that is being undertaken in our laboratory as a contribution to the development of novel diets for tuna fish.
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References
Appel W (1974) Aminopeptidase and amino acid acrylamidase. In: Bergmeyer HU (ed) Methods of enzymatic analysis. Academic, New York, pp 950–978
Bernfeld P (1955) Amylase α and β: colorimetric assay method. In: Colowich SP, Kaplan NO (eds) Methods in enzymology. Academic, New York, pp 149–157
Borgström B, Erlanson CH (1973) Pancreatic lipase and co-lipase: interactions and effects of bile salts and other detergents. Eur J Biochem 37:60–68
Borlongan IG (1990) Studies on the digestive lipases of milkfish, Chanos chanos. Aquaculture 89:315–325
Bradford MM (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem 72:248–254
Cao MJ, Osatomi K, Suzuki M, Hara K, Tachibana K, Ishihara T (2000) Purification and characterization of two anionic trypsin from the hepatopancreas of carp. Fish Sci 66:1172–1179
Castillo-Yáñez FJ, Pacheco-Aguilar R, Garcia-Carreño FL, Navarrete-Del Toro MA (2005) Isolation and characterization of trypsin from pyloric caeca of Monterey sardine Sardinops sagax caerulea. Comp Biochem Physiol 140B:91–98
Chakrabarti I, Gani MdA, Chaki KK, Sur R, Misra KK (1995) Digestive enzymes in 11 freshwater teleost fish species in relation to food habit and niche segregation. Comp Biochem Physiol 112A(1):167–177
Clark J, MacDonald NL, Stark JR (1987) Leucine aminopeptidase in the digestive tract of Dover sole (Solea solea L.). Aquaculture 61:231–239
Erlanger BF, Kolowsky N, Cohen W (1961) The preparation and properties of two new chromogenic substrates of trypsin. Arch Biochem Biophys 95:271–278
Fernandez I, Moyano FJ, Diaz M, Martinez T (2001) Characterization of α-amylase activity in five species of Mediterranean sparid fishes (Sparidae, Teleostei). J Exp Mar Biol Ecol 262:1–12
Gildberg A (1988) Aspartic proteinases in fish and aquatic invertebrates. Comp Biochem Physiol 91B:425–435
Gildberg A, Raa J (1983) Purification and characterization of pepsins from the Arctic fish capelin (Mallotus villosus). Comp Biochem Physiol 75A(3):337–342
Gjellesvik DR, Lombardo D, Walther BT (1992) Pancreatic bile salt dependent lipase from cod (Gadus morhua): purification and properties. Biochim Biophys Acta 1124:123–134
Harpaz S, Uni Z (1999) Activity of intestinal mucosal brush border membrane enzymes in relation to the feeding habits of three aquaculture fish species. Comp Biochem Physiol 124A:155–160
Hidalgo MC, Urea E, Sanz A (1999) Comparative study of digestive enzymes in fish with different nutritional habits: proteolytic and amylase activities. Aquaculture 170:267–283
Hummel BCW (1959) A modified spectrophotometric determination of chymotrypsin, trypsin and thrombin. Can J Biochem Physiol 37:1393–1399
Kitagawa T, Kimura S, Nakata H, Yamada H (2006) Thermal adaptation of Pacific bluefin tuna Thunnus orientalis to temperate waters. Fish Sci 72:149–156
Kishimura H, Hayashi K, Miyashita Y, Yosiyuki N (2005) Characteristics of two trypsin isozymes from the viscera of Japanese anchovy (Engraulis japonica). J Food Biochem 29:459–469
Kishimura H, Tokuda Y, Klomklao S, Benjakul S, Ando S (2006) Comparative study of enzymatic characteristics of trypsins from the pyloric ceca of yellow tail (Seriola quinqueradiata) and brown hakeling (Physiculus japonicus). J Food Biochem 30:521–534
Kishimura H, Tokuda Y, Yabe M, Klomklao S, Benjakul S, Ando S (2007) Trypsins from the pyloric ceca of jacopever (Sebastes schlegelii) and elkhorn sculpin (Alcichthys alcicornis): isolation and characterization. Food Chem 100:1490–1495
Klomklao S, Benjakul S, Visessanguan W (2004) Comparative studies on proteolytic activity of splenic extract from three tuna species commonly used in Thailand. J Food Biochem 28:355–372
Klomklao S, Benjakul S, Visessanguan W, Kishimura H, Simpson B, Saeki H (2006) Trypsins from yellowfin tuna (Thunnus albacores) spleen: purification and characterization. Comp Biochem Physiol 144B:47–56
Klomklao S, Benjakul S, Visessanguan W, Kishimura H, Simpson BK (2007) Purification and characterization of trypsins from the spleen of skipjack tuna (Katsuwonus pelamis). Food Chem 100:1580–1589
Krogdahl A, Bakke-McKellep A (2005) Fasting and refeeding cause rapid changes in intestinal tissue mass and digestive enzyme capacities of Atlantic salmon (Salmo salar L.). Comp Biochem Physiol 141A:450–460
Kuz’mina VV (1985) Distribution of carbohydrase activity along the intestine of several species of fresh water fish. J Ichthyol 25(4):137–143
Kuz’mina V, Glatman L, Drabkin V, Gelman A (2003) Amylolytic activity in fish intestinal mucosa: temperature effects. Comp Biochem Physiol 134B:529–534
Liddle RA (1997) Cholecystokinin cells. Annu Rev Physiol 59:221–242
Lie Ø, Lambertsen G (1985) Digestive enzymes in cod (Gadus morhua): fatty acid specificity. Comp Biochem Physiol 80B:447–450
Lundstedt LM, Bibiano JF, Moraes G (2004) Digestive enzymes and metabolic profile of Pseudoplatystoma corruscans (Teleostei: Siluriformes) in response to diet composition. Comp Biochem Physiol 137B:331–339
Martinez A, Serra JL (1989) Proteolytic activities in the digestive tract of anchovy (Engraulis encrasicholus). Comp Biochem Physiol 93B:61–66
Morgan RG, Hoffman NE (1971) The interaction of lipase, lipase cofactor and bile salts in triglyceride hydrolysis. Biochim Biophys Acta 248(1):143–148
Munilla-Morán R, Saborido-Rey F (1996) Digestive enzymes in marine species. II. Amylase activities in gut from seabream (Sparus aurata), turbot (Scophthalmus maximus) and redfish (Sebastes mentella). Comp Biochem Physiol 113B(4):827–834
Patton JS, Warner TG, Benson AA (1977) Partial characterization of the bile salt-dependent triacylcglycerol lipase from the leopard shark pancreas. Biochim Biophys Acta 486:322–330
Rust MB (2002) Nutritional physiology. In: Halver JE, Hardy R (eds) Fish nutrition. Academic, New York, pp 367–452
Sarath G, De la Motte RS, Wagner FW (1989) Protease assay methods. In: Beynon R, Bond J (eds) Proteolytic enzymes: a practical approach. IRL, Oxford, pp 25–56
SigmaStat (2003) Systat® Inc. software, Richmond, California, USA
Simpson BK, Haard NF (1984) Purification and characterization of trypsin from the Greenland cod Gadus ogac. I. Kinetic and thermodynamic characteristics. Can J Biochem Cell Biol 62:894–900
Stevens ED, McLeese JM (1984) Why bluefin tuna have warm tummies: temperature effect on trypsin and chymotrypsin. Am J Physiol 246:486–494
Stevens ED, Kanwisher JW, Carey FG (2000) Muscle temperature in free-swimming giant Atlantic bluefin tuna (Thunnus thynnus L.). J Thermal Biol 25:419–423
Tanji M, Kageyama T, Takahashi K (1988) Tuna pepsinogens and pepsins. Eur J Biochem 177:251–259
Tičina V, Grubišić L, Katavić I (2004) Sampling and tagging of live bluefin tuna in growth-out floating cages. Aquaculture Res 35:307–310
Uys W, Hecht T (1987) Assays on the digestive enzymes of sharptooth catfish, Clarias gariepinus (Pisces: Clariidae). Aquaculture 63:301–313
Wang HY, Wang YJ, Wang QY, Xue CH, Sun M (2006) Purification and characterization of stomach protease from the turbot (Scophthalmus maximus L.). Fish Physiol Biochem 32:179–188
Acknowledgements
This work was supported by grant SEP-2004-CO1–45785. The authors thank Emyr Peña for his technical assistance. Grateful acknowledgement is also made to Maricultura del Norte, S.A. de C.V. for donations of personnel and practical local support to obtain samples. We thank Nancy Boston for her editorial work.
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de la Parra, A.M., Rosas, A., Lazo, J.P. et al. Partial characterization of the digestive enzymes of Pacific bluefin tuna Thunnus orientalis under culture conditions. Fish Physiol Biochem 33, 223–231 (2007). https://doi.org/10.1007/s10695-007-9134-9
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DOI: https://doi.org/10.1007/s10695-007-9134-9
Keywords
- Bile salts
- Digestive enzymes
- Pacific bluefin tuna
- Pancreatic lipase
- Thunnus orientalis