Source and amount of phenolic compounds | Observed results | Reference |
---|---|---|
Grape seed extract with 95 % proanthocyanidins including catechins and epicatechins. 300 mg, 600 mg and 1 g of grape seed extract were added to the flour. | The grape seed extract improved the antioxidant activity with respect to the control bread and a decrease in carboxymethyllysine, a compound present in the crust of bread, known to cause oxidative stress, was observed. The addition of the extract also caused a color change in the bread without significantly affecting other sensory properties. | Peng et al. (2010) |
Prickly pear (Opuntia ficus-indica) mucilage added at 5.62 to 1.38 % to the flour | The substitution of water with prickly pear mucilage did not affect the fermentation process or the sensory acceptance by the trained panel. An enrichment of antioxidant compounds was observed | Liguori et al. (2019) |
Pomegranate seed powder in 5, 7.5, 10, 12.5 % substitutions | With a 10 % substitution of wheat flour with pomegranate seed flour, a slight decrease in rheological properties such as volume and crumb hardness were observed. An increase in the content of punicic acid antioxidant activity was observed. | Pamisetti et al. (2019) |
Hazelnut and walnut flours, in 1, 3, 6 and 9 % substitutions | The addition of hazelnuts and walnuts to the formulation increased the fiber and fat content of the bread, as well as a decrease in the loaf volume, which resulted in a harder and chewier consistency. On the other hand, it increased the antioxidant activity of bread, as well as its nutritional value. | Pycia & Ivanisova (2020) |
Defatted apple seed flour in 5 and 20 % substitution | Partial substitution of wheat flour with defatted apple seed flour had a significant impact from a nutritional, sensory and texture point of view. The 20 % substitution had the highest nutritional value. While the 5 % substitution had better sensory acceptance and higher soluble fiber content. | Puric et al. (2020) |
Tannic acid at levels of 0.01, 0.02 and 0.03 g/kg | The addition of tannic acid increased water absorption, dough stability, increasing its resistance and extensibility. The best rheological characteristics were observed at 0.03 g/kg. The loef volume increased while the free sulfhydryl groups decreased. Which may indicate the formation of new bonds between tannic acid and gluten proteins. | Zhang et al. (2010) |
Phenolic acids: caffeic, ferulic, syringic and gallic at 4.44 mmol L-1 g-1 | The addition of phenolic acids decreased the mixing time, as well as the tolerance to mixing, spread and the volume of the loaf. | Han & Bong-Kyung (2011) |
Tannin solution at 0.1, 0.2 and 0.3 % | The 0.3 % solution showed the best mixing properties. The addition of tannins was found to promote the polymerization of gluten proteins, thus resulting in improved mixing properties. | Wang et al. (2014) |
Addition of sorghum and grape seed proanthocyanidins at 0.8, 1.6 and 2.5 mg of PAC/ g of flour | Two types of proanthocyanidins (PAC) from two different natural sources were added. Sorghum PAC increased the elasticity and strength of a weak gluten which made it acquire the rheological behavior of a strong gluten. While grape seed PAC showed a slight increase in the elasticity of the dough. Which indicates that the molecular weight of PACs is a key factor in the interaction between these compounds and gluten proteins. | Girard et al. (2016) |
Green coffee bean flour at 1, 2, 3, 4 and 5 % substitution | Phenolic compounds present in the green coffee bean flour interacted with the bread matrix, as observed by the protein-phenol complexes formation, observed through chromatography and electrophoresis. Results also showed a decrease in starch and protein digestibility. | Swieca et al. (2018) |