SOME PROPERTIES OF SALIVARY α -AMYLASE OF THE STRIPPED BUG, GRAPHOSOMA LINEATUM (L.) (HET., SCUTELLERIDAE)

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YAZDANIAN M.; FARSHBAF POURABAD R.; RASHIDI M.R.; VALIZADEH M.; RASHTCHIZADEH N.; VATANKHAH A.M.; HAMIDI ALI ASGHAR

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2008 | Volume:18 | Issue:3 Page(s): 243-259

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Title

SOME PROPERTIES OF SALIVARY α -AMYLASE OF THE STRIPPED BUG, GRAPHOSOMA LINEATUM (L.) (HET., SCUTELLERIDAE)

Author(s)

Keywords

ENZYME INHIBITORSQ3

GRAPHOSOMA LINEATUMQ3

PROPERTIESQ3

SALIVARY α -AMYLASEQ3

Abstract

Studying insect digestive enzymes is important for understanding the function of their digestive systems. Nowadays, many attentions have focused on plant ENZYME INHIBITORS and their application for producing transgenic plants. Determining the PROPERTIES of all digestive enzymes is the first step that should be executed. In the case of beneficial insects, digestive enzyme activators would be of great importance. In 2004, some PROPERTIES of salivary a-amylase of the stripped bug, GRAPHOSOMA LINEATUM were investigated for the first time. The experiments were repeated four times. Enzyme was active at 25 to 50°C and its considerable activities were observed at 25 to 40°c. However, the highest activity occurred at 37°C; so, its optimum temperature was 37°c. Enzyme activity decrease at Ph4, 4.5 and 10 in relation to the elongation of incubation period (30-110 minutes). At pH5 to 9.5, enzyme was active throughout the incubation period without any decreasing. At pH 10.5, enzyme was active until 30 minutes after incubation; and at pH11, the enzyme became completely inactive. Optimum pH for enzyme activity was 6.5. There was a linear relationship between enzyme concentration (2-25 pairs of salivary glands per one ml of buffer solution) and its activity. Enzyme activities in phosphate buffer (41.53 U/mg protein), Ringer's infusion (42.52 U/mg protein), 5% dextrose (43.10 U/mg protein) and distilled water (41.63 U/mg protein) solutions were statistically similar, but significant difference was observed between its activity in 96°C (40.06 U/mg protein) and 75°C (14.07) ethanol solutions. Preservation of the enzyme solution at 4°C for 40 days had no effects on its activity.

Cites

EVALUATING SOME PROPERTIES OF INDIAN MOTH PLODIA INTERPUNCTELLA HÜBNER (LEP., PYRALIDAE) ALPHA-AMYLASE

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APA: Copy

YAZDANIAN, M., FARSHBAF POURABAD, R., RASHIDI, M.R., VALIZADEH, M., RASHTCHIZADEH, N., VATANKHAH, A.M., & HAMIDI, ALI ASGHAR. (2008). SOME PROPERTIES OF SALIVARY α -AMYLASE OF THE STRIPPED BUG, GRAPHOSOMA LINEATUM (L.) (HET., SCUTELLERIDAE). JOURNAL OF AGRICULTURAL KNOWLEDGE, 18(3), 243-259. SID. https://sid.ir/paper/28938/en

Vancouver: Copy

YAZDANIAN M., FARSHBAF POURABAD R., RASHIDI M.R., VALIZADEH M., RASHTCHIZADEH N., VATANKHAH A.M., HAMIDI ALI ASGHAR. SOME PROPERTIES OF SALIVARY α -AMYLASE OF THE STRIPPED BUG, GRAPHOSOMA LINEATUM (L.) (HET., SCUTELLERIDAE). JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2008;18(3):243-259. Available from: https://sid.ir/paper/28938/en

IEEE: Copy

M. YAZDANIAN, R. FARSHBAF POURABAD, M.R. RASHIDI, M. VALIZADEH, N. RASHTCHIZADEH, A.M. VATANKHAH, and ALI ASGHAR HAMIDI, “SOME PROPERTIES OF SALIVARY α -AMYLASE OF THE STRIPPED BUG, GRAPHOSOMA LINEATUM (L.) (HET., SCUTELLERIDAE),” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 18, no. 3, pp. 243–259, 2008, [Online]. Available: https://sid.ir/paper/28938/en

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