Effects of sunn pest (Eurygaster integriceps) damage ratios on rheological characteristics of wheat flour

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H. Dizlek
M.S. Özer


sunn pest damage ratios, wheat quality, dough rheological characteristics, farinograph, extensograph


The effects of sunn pest (Eurygaster integriceps) damage ratios (SPDR) on flour properties and dough characteristics of wheat were investigated in this study. The flours obtained from sound (control), medium damage (2% and 4%) and high damage (from 8 to 100%) samples of 2 bread wheat cultivars (Golia and Sagittario) were analysed for rheological characteristics. As the SPDR increased, farinograph water absorption, dough development time and stability, as well as extensograph resistance, energy, and ratio values of both cultivars decreased significantly (P<0.05) probably due to deteriorative effects of sunn pest (SP) damage on gluten quality. Farinograph tolerance index and softening degree values of the damaged samples were considerably higher, while extensograph dough extensibility value was partially higher compared to those of sound samples in both wheat cultivars, due to proteolytic degradation. The strength and breaking force of the dough samples decreased significantly with increasing SPDR indicating that they were susceptible to spreading and not suitable for handling, bread making and blending application. Deterioration in gluten quality supported the significant decreases in all farinogram and extensogram values of the dough samples with increasing SPDR. Decrease in quality characteristics started at 2% SPDR and flour-dough properties reduced very obviously after 4% SPDR in both wheat varieties. This study showed that although the features of 2 wheat varieties were different from each other, dough characteristics of varieties were negatively (resistance and energy values decrease) and similarly affected by SP damage. The extensograph test also demonstrated a clear distinction between damaged and undamaged wheat samples by SP, due to increasing SP protease activity in the dough during the progress of time in the extensograph test.

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American Association of Cereal Chemists International (AACCI), 2000. Approved methods of analysis. AACC International, St. Paul, MN, USA.
Aja, S., Perez, G. and Rosell, C.M., 2004. Wheat damage by Aelia spp.and Eurygaster spp.: effects on gluten and water-soluble compounds released by gluten hydrolysis. Journal of Cereal Science 39: 187-193.
Atli, A., Kocak, N., Köksel, H., Ozan, A.N., Aktan, B., Karababa, E., Dag, A., Tuncer, T., Dikmen, B. and Ozkan, S., 1988b. The effects of damaged grains by sunn pest (Eurygaster spp.) and wheat stinkbug (Aelia spp.) on quality of bread wheat. Tarm Printing, Ankara, Turkey.
Atli, A., Köksel, H. and Dag, A., 1988a. Effect of sunn pest damage on bread wheat quality and its determination. First International Sunn Pest Symposium. June 13-17, 1988. Tekirdag, Turkey, pp. 1-19.
Basar, S., Karaoglu, M.M. and Boz, H., 2015. The effects of Cephalar?a syriaca flour on the quality of sunn pest (Eurygaster integriceps)-damaged wheat. Journal of Food Quality 39: 13-24.
Canadian Grain Commission (CGC), 2009. Canadian wheat commission report. The 2000 country report. Available at: https://www.grainscanada.gc.ca/index-eng.htm
Cressey, P.J., Farrell, J.A.K. and Stufkens, M.W. 1987. Identification of an insect species causing bug damage in New Zealand wheats. New Zealand Journal of Agricultural Research 30: 209-212.
Diraman, H., 2009. Effect of suni-bug (Eurygaster spp.) damage on some biochemical properties of bread wheat variety (Bezostaja). Asian Journal of Chemistry 21: 7049-7053.
Diraman, H., 2010. Effect of microwaves on technological and rheological properties of suni-bug (Eurygaster spp) damaged and undamaged wheat flour. Food Science Technology Research 16: 313-318.
Diraman, H. and Boyacioglu, M.H., 1997. The studies of application of microwave process on the flours: II. Some qualitative and rheological changes in sunn pest damaged flour by application of microwave process. Un Mamulleri Dunyasi 5: 4-6, 8, 10.
Diraman, H., Boyacioglu, M.H., Boyacioglu, D. and Khan, K., 2013. The effect of steam tempering of insect (wheat bug, Eurygaster spp.) damaged on some protein fractions and farinogram values. Gida Dergisi 38: 359-365.
Dizlek, H. and Islamoglu, M., 2009. Effects of sunn pest (Eurygaster integriceps) damage ratio on gluten quantity and quality of wheat varieties. Hasad Gida Dergisi 25: 44-49.
Dizlek, H. and Islamoglu, M., 2015. Effects of sunn pest (Eurygaster maura L. Heteroptera; Scutelleridae) sucking number on physical and physicochemical characteristics of wheat varieties. Journal of Applied Botany and Food Quality 88: 10-15.
Dizlek, H. and Özer, M.S., 2016. Effects of sunn pest (Eurygaster integriceps) damage ratio on physical, chemical, and technological characteristics of wheat. Quality Assurance and Safety of Crops and Foods 8: 145-156.
Dizlek, H. and Özer, M.S., 2017. Improvement of physical, physicochemical, and rheological characteristics of sunn pest (Eurygaster integriceps) damaged wheat by blending application. Quality Assurance and Safety of Crops and Foods 9: 31-39.
Dizlek, H., Özer, M.S., Altan, A. and Gul, H., 2006. The interaction of wheat gluten proteins. In: Belibagli, K.B. and Dalgic, A.C. (eds.) Proceedings book of cereal products technology congress and fair. September 7-8, 2006. Gaziantep, Turkey, pp. 280-286.
Dizlek, H., Özer, M.S. and Gul, H., 2008. Physical characteristics of sunn pest (Eurygaster integriceps) damaged wheat separated into categories according to infection ratio. In: Köksel, H., Uygun, U. and Basman, A. (eds.) Proceedings book of Bosphorus 2008 ICC international conference. April 24-26, 2008. Istanbul, Turkey, pp. 165.
Every, D., Farrell, J.A.K. and Stufkens, M.W., 1989. Effects of Nysius huttoni on the protein and baking properties of two New Zealand wheat cultivars. New Zealand Journal of Crop and Horticultural Science 17: 55-60.
Every, D., Farrell, J.A., Stufkens, M.W. and Wallace, A.R., 1998. Wheat cultivar susceptibility to grain damage by the New Zealand wheat bug, Nysius huttoni, and cultivar susceptibility to the effects of bug proteinase on baking quality. Journal of Cereal Science 27: 37-46.
Hariri, G., Williams, P.C. and El-Haramein, F.J., 2000. Influence of pentatomid insects on the physical dough properties and two-layered flat bread baking quality of Syrian wheat. Journal of Cereal Science 31: 111-118.
Hosseininaveh, V., Bandani, A. and Hosseininaveh, F., 2009. Digestive proteolytic activity in the sunn pest, Eurygaster integriceps. Journal of Insect Science 9: 70-81.
International Center for Agricultural Research in the Dry Areas (ICARDA), 1983. Counteracting suni bug damage to wheat flour baking quality. ICARDA Highlights 82, ICARDA, Aleppo, Syria, pp. 17-18.
Karababa, E. and Ozan, A.N., 1998. Effect of wheat bug (Eurygaster integriceps) damage on quality of a wheat variety grown in Turkey. Journal of the Science of Food and Agriculture 77: 399-403.
Kinaci, E. and Kinaci, G., 2004. Quality and yield losses due to Sunn pest (Hemiptera: Scutelleridae) in different wheat types in Turkey. Field Crops Research 89: 187-195.
Kinaci, E., Kinaci, G., Yildirim, A.F. and Atli, A., 1998. Sunn pest problems in central Anatolia and the role of wheat varieties in integrated control. Euphytica 100: 63-67.
Kocak, A.N. and Atli, A., 1996. Bread wheat blending research III. Improvement of farinogram and extensogram properties of some bread wheat varieties by blending. Turkish Journal of Agriculture and Forestry 20: 359-373.
Konarev, A.V., Beaudoin, F., Marsh, J., Vilkova, N.A., Nefedova, L.I., Sivri, D., Köksel, H., Shewry, P.R. and Lovegrove, A., 2011. Characterization of a glutenin-specific serine proteinase of sunn bug Eurygaster integriceps Put. Journal of Agricultural and Food Chemistry 59: 2462-2470.
Konarev, A.l.V., Konarev, A.V., Nefedova, L.I., Gubareva, N.K. and Sivri Ozay, D., 2013. Analysis of gluten-hydrolyzing proteinase polymorphism in wheat grains damaged by sunn pest Eurygaster integriceps Put. and related bugs. Russian Agricultural Sciences 39: 390-395.
Köksel, H., Atli, A., Dag, A. and Sivri, D., 2002. Commercial milling of sunn pest (Eurygaster spp.) damaged wheat. Nahrung-Food 46: 25-27.
Köksel, H., Ozderen, T., Olanca, B. and Sivri Ozay, D., 2009. Effects of suni bug (Eurygaster spp.) damage on milling properties and semolina quality of durum wheats (Triticum durum L.). Cereal Chemistry 86: 181-186.
Kretovich, V.L., 1944. Biochemistry of the damage to grain by the wheat-bug. Cereal Chemistry 21: 1-16.
Lorenz, K. and Meredith, P., 1988. Insect damaged wheat: history of the problem, effects on baking quality, remedies. Lebensmittel-Wissenschaft and Technologie 21: 181-187.
Olanca, B., Sivri Ozay, D. and Köksel, H., 2009. Effects of suni-bug (Eurygaster spp.) damage on size distribution of durum wheat (Triticum durum L.) proteins. European Food Research and Technology 229: 813-820.
Ozberk, I., Atli, A., Pfeiffer, W., Ozberk, F. and Coskun, Y., 2005. The effect of sunn pest (Eurigaster integriceps) damage on durum wheat: impact in the marketplace. Crop Protection 24: 267-274.
Ozderen, T., Olanca, B., Sanal, T., Sivri Ozay, D. and Köksel, H., 2008. Effects of suni-bug (Eurygaster spp.) damage on semolina properties and spaghetti quality characteristics of durum wheats (Triticum durum L.). Journal of Cereal Science 48: 464-470.
Paulian, F. and Popov, C., 1980. Sunn pest or cereal bug. In: Hafliger, E. (ed.) Wheat. Ciba-Geigy, Basel, Switzerland, pp. 69-74.
Rao, G.V. and Rao, P.H., 1993. Methods for determining rheological characteristics of doughs: a critical evaluation. Journal of Food Science and Technology 30: 77-87.
Rashwani, A., 1984. Introduction to the major insect pests of wheat and barley in the Middle East and North Africa. ICARDA Technical Manual No 9, ICARDA, Aleppo, Syria.
Sivri, D., Köksel, H. and Bushuk, W., 1998. Effects of wheat bug (Eurygaster maura) proteolytic enzymes on electrophoretic properties of gluten proteins. New Zealand Journal of Crop and Horticultural Science 26: 117-125.
Sivri, D., Olanca, B., Atli, A. and Köksel, H., 2003. Effects of intercultivar variation on the gluten proteins and rheological properties of bug (Eurygaster spp.) damaged wheats. In: Lafiandra, D., Masci, S. and D’ovidio, R. (eds.) The gluten proteins 2001. RSC advancing the chemical sciences, Viterbo, Italy, pp. 421-424.
Sivri, D., Sapirstein, H.D., Bushuk, W. and Köksel, H., 2002. Wheat intercultivar differences in susceptibility of glutenin protein to effects of bug (Eurygaster integriceps) protease. Cereal Chemistry 79: 41-44.
Williams, P., El-Haramein, F.J., Nkkoul, H. and Rihavi, S., 1986. Crop quality evaluation methods and guidelines. ICARDA Technical Manual No 14, ICARDA, Aleppo, Syria.
Yuksel, M., 1969. Research on sunn pest (Eurygaster integriceps put.) damage and compared with wheat stinkbug (Aelia rostrata boh.) damage. Yenidesen Press, Ankara, Turkey.