71F-5 |
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M. H. ABUGHOUSH, Dept. of Nutrition, Hashemite Univ., P.O. Box 330156, Zarqa 13133, Jordan and T. J. Herald, Food Science Institute, Kansas State Univ., Call Hall, Manhattan, KS 66502. Over 1.8 billion people consume flat bread daily. Arabic Flat Bread (AFB), unlike other breads, has a limited shelf life. The two major considerations of shelf life are spoilage and staling. Thus, three connected studies were performed to determine if shelf life and quality of AFB may be extended by adding selected preservatives and/or improvers. The AFB was evaluated using texture analysis (TA), near-infrared spectroscopy (NIRS), and sensory techniques. The first study investigated the addition of preservatives for shelf-life extension. A control and three preservatives treatments—fumaric acid (0.2%, F), sodium propionate (0.3%, P), and sodium propionate-fumaric acid mixture (PF)—were used either singly or in combination. The second study evaluated the addition of dough conditioners to maintain quality during storage. These included sodium stearoyl-2-lactylate (0.25%, SSL), monoglycreides (0.25%, MG), hydroxy propyl methyl cellulose gum (0.75%, HPMC), high-fructose corn syrup (4.2%, HFCS), and the combinations of improvers. The third study used a trained sensory panel to evaluate attributes. The results from the first study showed that PF extended shelf life an additional 13 days compared to the control. The second study showed that, after three days, the HFCS and improver combination significantly improved TA and NIRS profile compared to the control. This was confirmed with the third study, in which a trained sensory panel determined that the HFCS and improver combination was preferred over the control after storage. This study exhibited that, by using appropriate preservatives and improvers, the shelf life and quality of AFB may be extended. This is critical for countries that are restricted by distribution or storage mechanisms that would not have allowed for extended shelf life.
Session 71F, Religious & Ethnic Foods: General
2005 IFT Annual Meeting, July 15-20 - New Orleans, Louisiana |