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Elsevier BV Heliyon 9(6)
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    초록·키워드

    Helbat (hl'bət), a fasting semi-liquid condiment, is a popular indigenous traditional fermented product in Tigrai (a.k.a. Tigray), Ethiopia. It is formulated using <i>Vicia faba</i> flour prepared from mildly roasted dry beans. Despite its dietary, nutritional, religious, and cultural significance, the condiment is yet not exposed to scientific study. Hence, this research was carried out to: (a) ascertain the best faba bean variety for preparing high quality <i>Helbat</i>, (b) develop the formulation and preparation protocol of high quality <i>Helbat</i>, (c) determine the effects of fermentation and storage temperature and time on the physicochemical characteristics, proximate and mineral compositions, microbiological properties, and sensory qualities of <i>Helbat</i>, and (d) determine the shelf life of <i>Helbat</i> as the function of storage time and temperature. To this end, three faba bean varieties used in preparing <i>Helbat</i> as well as fermenting and stored <i>Helbat</i> products were studied using standard physicochemical, microbiological, and sensory evaluation procedures. Quantitative data were processed using inferential statistical methods and mean (±SD) values were compared at <i>a priori</i> set <i>p</i>-value of ≤0.05. The study showed that: (a) the best faba bean variety for making high quality <i>Helbat</i> was <i>Megulat</i>; (b) the best <i>Helbat</i> formulation constituted 400 wt units of bean flour, 7 wt units of garlic, 6 wt units of ginger, 5 wt units fenugreek, 5 wt units of corrorima, 8 wt units of red pepper, and 3 wt units of black mustard; (c) the best <i>Helbat</i> formulation was nutritionally rich to supplement fasting consumers with proteins, fats, and minerals; (d) the <i>Helbat</i> formulation remained safe for up to eight weeks while maintaining its attractive sensory qualities when stored at 11-15 °C, and (e) increasing the fermentation and storage times led to changes in its physicochemical properties (i.e., temperature, pH, total titratable acidity, and total soluble solute) and depletion of many nutritionally vital components such as fats, proteins, and minerals. Thus, unless production and storage conditions are somehow modified, <i>Helbat</i> needs to be consumed fresh after three to seven days of fermentation. But further research may be required to make this recommendation conclusively. Exploring into its antioxidant properties and lactic acid bacteria (LAB) may highlight its qualities further.

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