PL
Celem pracy było określenie zmian tekstury miękiszu chleba pszennego wzbogaconego dodatkiem błonnika z szarańczynu strąkowego. Do badań przygotowano mieszanki mąki z dodatkiem włókna dietetycznego w udziale od 2,5 do 10% (co 2,5%) w odniesieniu do masy mąki. Ciasto prowadzono metodą jednofazową. Po wypieku i wystudzeniu chleba określono jego objętość oraz wyznaczono wskaźnik bieli miękiszu. Następnie pieczywo poddano ocenie organoleptycznej. Parametry mechaniczne miękiszu (test TPA) określono po 24 i 48 godzinach od zakończenia wypieku na próbkach o grubości 14 mm, wykorzystując do tego celu maszynę wytrzymałościową ZWICK Z020/TN2S. Wykazano, że dodatek błonnika w ilości do 5% wpłynął korzystnie na objętość uzyskanego pieczywa. Dodatek błonnika w ilości powyżej 2,5% powodował wzrost twardości miękiszu pieczywa, a dodatek tego składnika w ilości powyżej 5% powodował spadek spoistości i sprężystości miękiszu pieczywa, w szczególności po dwóch dobach jego przechowywania. Wraz ze zwiększaniem udziału błonnika wartości wskaźnika bieli miękiszu zwiększały się, o czym świadczy pociemnienie barwy miękiszu.
EN
A trend that has apparently increased in recent decades has been consumer demand for healthy foods which will have a positive impact on our health. Many forms of dietary fiber have been used in bread-making, but among these forms very interesting is carob fiber. Carob germ flour obtained from seeds could be also used as the protein source, enhancing also the overall nutritional value of the gluten-free products, including their fiber amount. The protein with high amount of lysine and arginine content of carob germ flour obtained from seeds is higher than those observed for other beans such as faba bean, pea and soybean. Usually fiber-rich breads are characterised by reduced volume, compacted crumb, and also poorer taste and fl avour compared to traditional bread. The aim of the work was to determine textural changes of wheat bread enriched by fiber from carob pod (specialist preparation belonging to nutraceuticals and prepared according to a patented processing). The investigations were carried out on mixtures of wheat flour with nutritional fiber added at rates from 2.5 to 10% (every 2.5%). The experimental baking was a smallscale straight-dough baking test. After cooling down to room temperature, the volume of bread and index of crumb brightness were evaluated. Subsequently bread was subjected to organoleptic assessment by the team of fi fteen evaluators. Mechanical parameters of bread crumb (TPA test) were determinated 24 and 48 h after baking, on bread crumb samples with the thickness of 14 mm using of the ZWICK ZO20/TN2S. The results showed that fiber carob addition up to 5% caused an increase of bread volume. The index of crumb brightness was ranged from 36.7% (control sample) to 1.4 for 10% of fiber carob. Organoleptic evaluation showed that the bread with 2.5 and 5% of fiber addition was characterized by a pleasant taste and smell. A higher proportion of fiber had a negative impact on the quality of bread. It was found that fiber carob addition higher than 2.5% had an impact on the increase of bread crumb hardness. Fiber addition higher than 5% caused a decrease of bread crumb cohesiveness and resilience 2 days after baking.