Journals / Gıda / 2009 / Cilt: 34 - Sayı: 6

Variation of Microbiological Properties, Water Activity and Ropiness of White and Whole Meal Breads Under Different Storage Conditions (Turkish with English Abstract)

Farklı Depolama Koşullarında Normal ve Kepekli Ekmeklerin Mikrobiyolojik Özellikleri, Su Aktivitesi ve Sünme Durumunun Değişimi

Journal
Gıda
Pages
351–358
Publication Date
2009-12-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results showed that, among the raw materials, yeast was the ingredient with the highest load of Bacillus spores.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, white and whole meal breads baked at laboratory conditions were stored at 4, 25, 37 and 45 ºC for 7 days.
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Key Findings & Data:Total mesophilic aerobic bacteria (TMAB) counts, mold and Bacillus counts were carried out on these breads at 24 hours intervals.
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Conclusion & Impact:Results showed that, among the raw materials, yeast was the ingredient with the highest load of Bacillus spores.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Ekmek · sünme · Bacillus

Abstract

In this study, white and whole meal breads baked at laboratory conditions were stored at 4, 25, 37 and 45 ºC for 7 days. Total mesophilic aerobic bacteria (TMAB) counts, mold and Bacillus counts were carried out on these breads at 24 hours intervals. Water activity of the crumb was also determined at the same intervals. Bacillus counts were performed to investigate the development of rope spoilage. Rope spore counts of the raw materials were determined as indicators of the initial load of Bacillus spores in the breads. The moisture, crude protein, crude fat, crude fiber, total ash and non-damaged starch composition of the breads were also determined at day 0 in order to identify the breads analytically. Results showed that, among the raw materials, yeast was the ingredient with the highest load of Bacillus spores. It was found that TMAB count was significantly (P<0.01) affected by the storage time and temperature. In addition to storage time and temperature, bread type also had a significant (P<0.01) effect on Bacillus counts. The results indicated no symptoms of mold growth. It was determined that temperature, bread type and storage time (P<0.01) had a statistically significant effect on aw values.

Özet

Bu çalışmada laboratuvar koşullarında pişirilmiş normal ve kepekli ekmekler, üretimden sonra 7 gün süreyle 4 farklı depolama koşulunda (4, 25, 37 ve 45 ºC) muhafaza edilmiştir. Her 24 saatte bir ekmeklerde toplam mezofilik aerobik bakteri (TMAB) sayısı, küf sayısı ve sünme (rope) gelişimini takip etmek üzere Bacillus sayısı ve ekmeklerin su aktiviteleri (aw) belirlenmiştir. Ekmeklerin başlangıç Bacillus sporu yükünü belirlemek için ekmek hammaddelerinde sünme spor sayımı yapılmıştır. Üretilen ekmekleri analitik olarak tanımlamak için 0. günde ekmeklerin toplam nem, ham protein, ham yağ, ham lif, toplam kül ve zedelenmemiş nişasta miktarları belirlenmiştir. Elde edilen sonuçlar, hammaddelerden spor yükü en fazla olan unsurun maya olduğunu, ekmeklerdeki TMAB sayısının muhafaza süresi ve sıcaklığından önemli düzeyde (P<0.01) etkilendiğini, Bacillus sayısının bunlara ilaveten ekmek tipinden de etkilendiğini (P<0.01), küf gelişiminin ise olmadığını göstermiştir. Ayrıca sıcaklık derecesi, ekmek tipi ve muhafaza süresinin (P<0.01) aw değerini istatistiksel olarak önemli düzeyde etkilediği belirlenmiştir.

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Cite This Article

CERTEL, M., EREM, F., KARAKAŞ, B. (2009). Variation of Microbiological Properties, Water Activity and Ropiness of White and Whole Meal Breads Under Different Storage Conditions (Turkish with English Abstract). Gıda, Cilt: 34 - Sayı: 6, 351–358. https://ajindex.com/articles/39713

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References (8)

  1. Smith JP, Dafıas DP, El-Khoury W, Koukoutsis J, ElKhoury A. 2004. Shelf life and safety concerns of bakery products - A review. Crit Rev Food Sci Nutr, 44: 19-55. Pateras IMC. 1999. Bread spoilage and staling. Technology of Breadmaking. SP Cauvain and LS Young (eds.) Aspen Publishers Inc. pp. 240-261,
  2. Aran N, Boyacıoğlu MH. 2005. Ekmek HastalıklarıRope. (http://www.ekmekdunyasi.com/ekmekhastaliklari.htm)
  3. Ellis WO, Obubuafo AK, Ofosu-Okyere A, Marfo, EK, Osei-Agyemang K, Odame-Darkwah JK. 1997. A survey of bread defects in Ghana. Food Control, 8: 77-82. Legan JD. 1993. Mould spoilage of bread: the problem and some solutions. Int Biodeter Biodegr, 32: 33-53.
  4. Sorokulova IB, Reva ON, Smirnov VV, Lapa SV, Urdaci MC. 2003. Genetic diversity and involvement in bread spoilage of Bacillus strains isolated from flour and ropy bread. Lett Appl Microbiol, 37: 169-173.
  5. Volavsek PJA, Kirschner LAM, von Holy A. 1992. Accelerated methods to predict the rope-inducing potential of bread raw materials. S Afr J Sci, 88: 99-102. Voysey PA. 1989. Rope: a problem for bakers. J Appl Bacteriol, 67: xxv-xxvi. Kirschner LAM, von Holy A. 1989. Rope spoilage of bread. S Afr J Sci, 85: 425-427.
  6. Thompson JM, Waites WM, Dodd CER. 1998. Detection of rope spoilage in bread caused by Bacillus species. J Appl Microbiol, 85: 481-486.
  7. Pattison TL, Lindsay D, von Holy A. 2004. Natural antimicrobials as potential replacements for calcium propionate in bread. S Afr J Sci, 100: 342-348. Anon 1992. TS 3522. “Ekmek Mayası” Standardı. Türk Standartları Enstitüsü. Ankara, 9ss. Anon 2004. http://www.i2workout.com/mcuriale/mpn/index.html
  8. Elgün A, Certel M, Ertugay Z, Kotancılar G. 2002. Tahıl ve Ürünlerinde Analitik Kalite Kontrolü ve Laboratuvar Uygulama Klavuzu. Atatürk Üniversitesi Yayınları No. 867, Erzurum, 245 s. Anon 1980. ICC (International Association for Cereal Chemistry). Standard No. 105/1: Method for the determination of crude protein in cereals and cereal products for food and for feed. Anon 1960. ICC (International Association for Cereal Chemistry). Standard No. 104: Method for the determination of ash in cereals and cereal products. Anon 1983. Gıda Maddeleri Muayene ve Analiz Yöntemleri Kitabı. T.C. Tarım ve Köyişleri Bakanlığı Gıda İşleri Genel Müdürlüğü. 65: 62-105, Ankara, 794 s. Anon 1976. ICC (International Association for Cereal Chemistry). Standard No. 123: Method for the determination of starch contents by hidrochloric acid dissolution. Anon 1978. ICC (International Association f