488 research outputs found

    Chiral Fermions and Quadratic Divergences

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    In an approach towards naturalness without supersymmetry, renormalization properties of nonsupersymmetric abelian quiver gauge theories are studied. In the construction based on cyclic groups Z_p the gauge group is U(N)^p, the fermions are all in bifundamentals and the construction allows scalars in adjoints and bifundamentals. Only models without adjoint scalars, however, exhibit both chiral fermions and the absence of one-loop quadratic divergences in the scalar propagator.Comment: 11 page

    Fiber from fruit pomace: A review of applications in cereals-based products

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    [EN] Fruit pomace is a by-product of the fruit processing industry composed of cell wall compounds, stems, and seeds of the fruit; after washing, drying, and milling, a material high in fiber and bioactive compounds is obtained. In bakery products, dried fruit pomace can be added to replace flour, sugar, or fat and thus reduce energy load while enhancing fiber and antioxidant contents. The high fiber content of fruit pomace, however, results in techno-functional interactions that affect physicochemical and sensory properties. In this article, different sources of fruit pomace are discussed along with their application in bread, brittle and soft bakery products, and extrudates.The funding, assured through the national partner organizations, is gratefully acknowledged: INIA in Spain, DEFRA in UK, and Federal Ministry of Education and Research via PTJ in Germany (grant 031B0004).Quiles ChuliĂĄ, MD.; Campbell, G.; Struck, S.; Rohm, H.; Hernando Hernando, MI. (2016). Fiber from fruit pomace: A review of applications in cereals-based products. Food Reviews International. 34(2):162-181. https://doi.org/10.1080/87559129.2016.1261299S162181342Figuerola, F., Hurtado, M. L., EstĂ©vez, A. M., Chiffelle, I., & Asenjo, F. (2005). Fibre concentrates from apple pomace and citrus peel as potential fibre sources for food enrichment. Food Chemistry, 91(3), 395-401. doi:10.1016/j.foodchem.2004.04.036Rohm, H., Brennan, C., Turner, C., GĂŒnther, E., Campbell, G., Hernando, I., 
 Kontogiorgos, V. (2015). Adding Value to Fruit Processing Waste: Innovative Ways to Incorporate Fibers from Berry Pomace in Baked and Extruded Cereal-based Foods—A SUSFOOD Project. Foods, 4(4), 690-697. doi:10.3390/foods4040690Saura-Calixto, F. (1998). Antioxidant Dietary Fiber Product:  A New Concept and a Potential Food Ingredient. Journal of Agricultural and Food Chemistry, 46(10), 4303-4306. doi:10.1021/jf9803841Viebke, C., Al-Assaf, S., & Phillips, G. O. (2014). Food hydrocolloids and health claims. Bioactive Carbohydrates and Dietary Fibre, 4(2), 101-114. doi:10.1016/j.bcdf.2014.06.006Lattimer, J. M., & Haub, M. D. (2010). Effects of Dietary Fiber and Its Components on Metabolic Health. Nutrients, 2(12), 1266-1289. doi:10.3390/nu2121266Slavin, J. (2013). Fiber and Prebiotics: Mechanisms and Health Benefits. Nutrients, 5(4), 1417-1435. doi:10.3390/nu5041417Struck, S., Gundel, L., Zahn, S., & Rohm, H. (2016). Fiber enriched reduced sugar muffins made from iso-viscous batters. LWT - Food Science and Technology, 65, 32-38. doi:10.1016/j.lwt.2015.07.053Grigelmo-Miguel, N., & Martı́n-Belloso, O. (1999). Comparison of Dietary Fibre from By-products of Processing Fruits and Greens and from Cereals. LWT - Food Science and Technology, 32(8), 503-508. doi:10.1006/fstl.1999.0587Wang, L., Xu, H., Yuan, F., Pan, Q., Fan, R., & Gao, Y. (2015). Physicochemical characterization of five types of citrus dietary fibers. Biocatalysis and Agricultural Biotechnology, 4(2), 250-258. doi:10.1016/j.bcab.2015.02.003MartĂ­, N., Saura, D., Fuentes’, E., Lizama, V., GarcĂ­a, E., Mico-Ballester, M. J., & Lorente, J. (2011). Fiber from tangerine juice industry. Industrial Crops and Products, 33(1), 94-98. doi:10.1016/j.indcrop.2010.09.004Iora, S. R. F., Maciel, G. M., Zielinski, A. A. F., da Silva, M. V., Pontes, P. V. de A., Haminiuk, C. W. I., & Granato, D. (2014). Evaluation of the bioactive compounds and the antioxidant capacity of grape pomace. International Journal of Food Science & Technology, 50(1), 62-69. doi:10.1111/ijfs.12583Yu, J., & Ahmedna, M. (2012). Functional components of grape pomace: their composition, biological properties and potential applications. International Journal of Food Science & Technology, 48(2), 221-237. doi:10.1111/j.1365-2621.2012.03197.xMilala, J., Kosmala, M., SĂłjka, M., KoƂodziejczyk, K., ZbrzeĆșniak, M., & Markowski, J. (2011). Plum pomaces as a potential source of dietary fibre: composition and antioxidant properties. Journal of Food Science and Technology, 50(5), 1012-1017. doi:10.1007/s13197-011-0601-zMatias, M. de F. O., Oliveira, E. L. de, Gertrudes, E., & MagalhĂŁes, M. M. dos A. (2005). Use of fibres obtained from the cashew (Anacardium ocidentale, L) and guava (Psidium guayava) fruits for enrichment of food products. Brazilian Archives of Biology and Technology, 48(spe), 143-150. doi:10.1590/s1516-89132005000400018Larrauri, J. A., RupĂ©rez, P., Borroto, B., & Saura-Calixto, F. (1996). Mango Peels as a New Tropical Fibre: Preparation and Characterization. LWT - Food Science and Technology, 29(8), 729-733. doi:10.1006/fstl.1996.0113Martin-Cabrejas, M. A., Esteban, R. M., Lopez-Andreu, F. J., Waldron, K., & Selvendran, R. R. (1995). Dietary Fiber Content of Pear and Kiwi Pomaces. Journal of Agricultural and Food Chemistry, 43(3), 662-666. doi:10.1021/jf00051a020Struck, S., Plaza, M., Turner, C., & Rohm, H. (2016). Berry pomace - a review of processing and chemical analysis of its polyphenols. International Journal of Food Science & Technology, 51(6), 1305-1318. doi:10.1111/ijfs.13112Campbell, G.; Ross, M.; Motoi, L. Expansion capacity of bran-enriched doughs in different scales of laboratory mixers. InBubbles in food 2; Campbell, G.M., Scanlon, M.G., Pyle, D.L., Eds.; Eagan Press: St. Paul, MN, 2008; pp 323–336.Cauvain, S.; Chamberlain, N.; Collins, T.; Davies, J. The distribution of dietary fibre and baking quality among mill fractions of CBP flour. FMBRA Report No, 1983, 5.Galliard, T., & Collins, A. D. (1988). Effects of oxidising improvers, an emulsifier, fat and mixer atmosphere on the performance of wholemeal flour in the chorleywood bread process. Journal of Cereal Science, 8(2), 139-146. doi:10.1016/s0733-5210(88)80024-9Galliard, T., & Gallagher, D. M. (1988). The effects of wheat bran particle size and storage period on bran flavour and baking quality of bran/flour blends. Journal of Cereal Science, 8(2), 147-154. doi:10.1016/s0733-5210(88)80025-0Gan, Z., Ellis, P. R., Vaughan, J. G., & Galliard, T. (1989). Some effects of non-endosperm components of wheat and of added gluten on wholemeal bread microstructure. Journal of Cereal Science, 10(2), 81-91. doi:10.1016/s0733-5210(89)80037-2Gan, Z., Galliard, T., Ellis, P. R., Angold, R. E., & Vaughan, J. G. (1992). Effect of the outer bran layers on the loaf volume of wheat bread. 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Comparative Effects of Particle Size Reduction on Physical Structure and Water Binding Properties of Several Plant Fibers. Journal of Food Science, 52(6), 1595-1599. doi:10.1111/j.1365-2621.1987.tb05886.xCADDEN, A.-M. (1988). Moisture Sorption Characteristics of Several Food Fibers. Journal of Food Science, 53(4), 1150-1155. doi:10.1111/j.1365-2621.1988.tb13550.xLaurikainen, T., HĂ€rkönen, H., Autio, K., & Poutanen, K. (1998). Effects of enzymes in fibre-enriched baking. Journal of the Science of Food and Agriculture, 76(2), 239-249. doi:10.1002/(sici)1097-0010(199802)76:23.0.co;2-lCampbell, G.; Ross, M.; Motoi, L. Bran in bread: Effects of particle size and level of wheat and oat bran on mixing, proving and baking. InBubbles in food 2; Campbell, G.M., Scanlon, M.G., Pyle, D.L., Eds.; Eagan Press: St. Paul, MN, 2008; pp 337–354.Sivam, A. S., Sun-Waterhouse, D., Quek, S., & Perera, C. O. (2010). Properties of Bread Dough with Added Fiber Polysaccharides and Phenolic Antioxidants: A Review. Journal of Food Science, 75(8), R163-R174. doi:10.1111/j.1750-3841.2010.01815.xAnil, M. (2007). Using of hazelnut testa as a source of dietary fiber in breadmaking. Journal of Food Engineering, 80(1), 61-67. doi:10.1016/j.jfoodeng.2006.05.003Chang, R.-C., Li, C.-Y., & Shiau, S.-Y. (2016). Physico-chemical and sensory properties of bread enriched with lemon pomace fiber. Czech Journal of Food Sciences, 33(No. 2), 180-185. doi:10.17221/496/2014-cjfsMASOODI, F. A., & CHAUHAN, G. S. (1998). USE OF APPLE POMACE AS A SOURCE OF DIETARY FIBER IN WHEAT BREAD. Journal of Food Processing and Preservation, 22(4), 255-263. doi:10.1111/j.1745-4549.1998.tb00349.xO’Shea, N., RĂ¶ĂŸle, C., Arendt, E., & Gallagher, E. (2015). Modelling the effects of orange pomace using response surface design for gluten-free bread baking. Food Chemistry, 166, 223-230. doi:10.1016/j.foodchem.2014.05.157Rosell, C. M., Santos, E., & Collar, C. (2005). Mixing properties of fibre-enriched wheat bread doughs: A response surface methodology study. European Food Research and Technology, 223(3), 333-340. doi:10.1007/s00217-005-0208-6Walker, R., Tseng, A., Cavender, G., Ross, A., & Zhao, Y. (2014). Physicochemical, Nutritional, and Sensory Qualities of Wine Grape Pomace Fortified Baked Goods. Journal of Food Science, 79(9), S1811-S1822. doi:10.1111/1750-3841.12554BaƟman, A., & Köksel, H. (1999). Properties and Composition of Turkish Flat Bread (Bazlama) Supplemented with Barley Flour and Wheat Bran. Cereal Chemistry Journal, 76(4), 506-511. doi:10.1094/cchem.1999.76.4.506Waghmare, A. G., & Arya, S. S. (2013). Use of Fruit By-Products in the Preparation of HypoglycemicThepla: Indian Unleavened Vegetable Flat Bread. Journal of Food Processing and Preservation, 38(3), 1198-1206. doi:10.1111/jfpp.12080Barnes, P. J., & Lowy, G. D. A. (1986). 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Journal of Food Science, 54(3), 618-620. doi:10.1111/j.1365-2621.1989.tb04665.xMasoodi, F. A., Sharma, B., & Chauhan, G. S. (2002). Plant Foods for Human Nutrition, 57(2), 121-128. doi:10.1023/a:1015264032164Sudha, M. L., Indumathi, K., Sumanth, M. S., Rajarathnam, S., & Shashirekha, M. N. (2015). Mango pulp fibre waste: characterization and utilization as a bakery product ingredient. Journal of Food Measurement and Characterization, 9(3), 382-388. doi:10.1007/s11694-015-9246-3Romero-Lopez, M. R., Osorio-Diaz, P., Bello-Perez, L. A., Tovar, J., & Bernardino-Nicanor, A. (2011). Fiber Concentrate from Orange (Citrus sinensis L.) Bagase: Characterization and Application as Bakery Product Ingredient. International Journal of Molecular Sciences, 12(4), 2174-2186. doi:10.3390/ijms12042174Mildner-Szkudlarz, S., Siger, A., Szwengiel, A., & Bajerska, J. (2015). Natural compounds from grape by-products enhance nutritive value and reduce formation of CML in model muffins. 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Williams, C., Buttriss, J., Eds.; Woodhead Publishing: Cambridge, UK, 2006; pp 213–235.Zahn, S., Pepke, F., & Rohm, H. (2010). Effect of inulin as a fat replacer on texture and sensory properties of muffins. International Journal of Food Science & Technology, 45(12), 2531-2537. doi:10.1111/j.1365-2621.2010.02444.xGrigelmo-Miguel, N., Carreras-Boladeras, E., & MartĂ­n-Belloso, O. (2001). Influence of the Addition of Peach Dietary Fiber in Composition, Physical Properties and Acceptability of Reduced-Fat Muffins. Food Science and Technology International, 7(5), 425-431. doi:10.1177/108201301772660484Al-Sayed, H. M. A., & Ahmed, A. R. (2013). Utilization of watermelon rinds and sharlyn melon peels as a natural source of dietary fiber and antioxidants in cake. Annals of Agricultural Sciences, 58(1), 83-95. doi:10.1016/j.aoas.2013.01.012Kocer, D., Hicsasmaz, Z., Bayindirli, A., & Katnas, S. (2007). Bubble and pore formation of the high-ratio cake formulation with polydextrose as a sugar- and fat-replacer. Journal of Food Engineering, 78(3), 953-964. doi:10.1016/j.jfoodeng.2005.11.034Hicsasmaz, Z., Yazgan, Y., Bozoglu, F., & Katnas, Z. (2003). Effect of polydextrose-substitution on the cell structure of the high-ratio cake system. LWT - Food Science and Technology, 36(4), 441-450. doi:10.1016/s0023-6438(03)00038-0Struck, S., Jaros, D., Brennan, C. S., & Rohm, H. (2014). Sugar replacement in sweetened bakery goods. International Journal of Food Science & Technology, 49(9), 1963-1976. doi:10.1111/ijfs.12617Zahn, S., Forker, A., KrĂŒgel, L., & Rohm, H. (2013). Combined use of rebaudioside A and fibres for partial sucrose replacement in muffins. LWT - Food Science and Technology, 50(2), 695-701. doi:10.1016/j.lwt.2012.07.026Ajila, C. M., Leelavathi, K., & Prasada Rao, U. J. S. (2008). 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Effect of dried pomegranate (Punica granatum) peel powder (DPPP) on textural, organoleptic and nutritional characteristics of biscuits. International Journal of Food Sciences and Nutrition, 65(7), 827-833. doi:10.3109/09637486.2014.937797Min, B., Bae, I. Y., Lee, H. G., Yoo, S.-H., & Lee, S. (2010). Utilization of pectin-enriched materials from apple pomace as a fat replacer in a model food system. Bioresource Technology, 101(14), 5414-5418. doi:10.1016/j.biortech.2010.02.022Larrea, M. ., Chang, Y. ., & Martı́nez Bustos, F. (2005). Effect of some operational extrusion parameters on the constituents of orange pulp. Food Chemistry, 89(2), 301-308. doi:10.1016/j.foodchem.2004.02.037Jung, J., Cavender, G., & Zhao, Y. (2014). Impingement drying for preparing dried apple pomace flour and its fortification in bakery and meat products. Journal of Food Science and Technology, 52(9), 5568-5578. doi:10.1007/s13197-014-1680-4Pasqualone, A., Bianco, A. M., Paradiso, V. 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    On the High-Temperature Behaviour of the Closed Superstring

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    The high-temperature expansion for closed superstring one-loop free energy is studied. The Laurent series representation is obtained and its sum is analytically continued in order to investigate the nature of the critical (Hagedorn) temperature. It is found that beyond this critical temperature the statistical sum contribution of the free energy is finite but has an imaginary part, signalling a possible metastability of the system.Comment: 7 pages, UTF32

    Mellin-Barnes Representation for the Genus-g Finite Temperature String Theory

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    The Mellin-Barnes representation for the free energy of the genus-gg string is constructed. It is shown that the interactions of the open bosonic string do not modify the critical (Hagedorn) temperature. However,for the sectors having a spinor structure, the critical temperature exists also for all gg and depends on the windings. The appearance of a periodic structure is briefly discussed.Comment: 9 pages, report UTF 294 (1993

    Laurent Series Representation for the Open Superstring Free Energy

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    Open superstrings at non-zero temperature are considered. A novel representation for the free energy (Laurent series representation) is constructed. It is shown that the Hagedorn temperature arises in this formalism as the convergence condition (specifically, the radius of convergence) of the Laurent series.Comment: Latex, 10 Page

    Real Special Geometry

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    We give a coordinate-free description of real manifolds occurring in certain four dimensional supergravity theories with antisymmetric tensor fields. The relevance of the linear multiplets in the compactification of string and five-brane theories is also discussed.Comment: 10 pgs (TeX with Harvmac), CERN-TH.7211/94, UCLA/94/TEP/14, POLFIS-TH.01/9

    Binary Cosmic Strings

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    The properties of cosmic strings have been investigated in detail for their implications in early-universe cosmology. Although many variations of the basic structure have been discovered, with implications for both the microscopic and macroscopic properties of cosmic strings, the cylindrical symmetry of the short-distance structure of the string is generally unaffected. In this paper we describe some mechanisms leading to an asymmetric structure of the string core, giving the defects a quasi-two-dimensional character. We also begin to investigate the consequences of this internal structure for the microscopic and macroscopic physics.Comment: 19 pages; uses harvmac (not included

    Moduli potentials in string compactifications with fluxes: mapping the Discretuum

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    We find de Sitter and flat space solutions with all moduli stabilized in four dimensional supergravity theories derived from the heterotic and type II string theories, and explain how all the previously known obstacles to finding such solutions can be removed. Further, we argue that if the compact manifold allows a large enough space of discrete topological choices then it is possible to tune the parameters of the four dimensional supergravity such that a hierarchy is created and the solutions lie in the outer region of moduli space in which the compact volume is large in string units, the string coupling is weak, and string perturbation theory is valid. We show that at least two light chiral superfields are required for this scenario to work, however, one field is sufficient to obtain a minimum with an acceptably small and negative cosmological constant. We discuss cosmological issues of the scenario and the possible role of anthropic considerations in choosing the vacuum of the theory. We conclude that the most likely stable vacuua are in or near the central region of moduli space where string perturbation theory is not strictly valid, and that anthropic considerations cannot help much in choosing a vacuum.Comment: 34 pages, no figure
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