Low false positive and accurate detection of yeast cell viability and concentration using an automatic staining and lensfree imaging platform

Mandacaru fruit pulp (Cereus jamacaru D.C.) as an adjunct and its influence on Beer properties

Beer is a complex product due to its raw materials (malt, hops, yeast, and water). Beer production can also use other matters as adjuncts. This study investigated the influence of Mandacaru fruit pulp (MFP) as an adjunct on volatile and phenolic compounds, and antioxidant properties of Beer. Worts were produced using four treatments including a control. Fermentations were conducted for 10 days at 18 °C using yeast Lachancea spp, maturated at 3 °C for 15 days, and bottled at 20 °C for 15 days. All compounds were evaluated by HPLC, and GC-MS. Worts' supplementation influenced the volatile and phenolic profile and increased the antioxidant activity of wort and Beer. Beers A (100 g of MFP/L), B (200 g of MFP/L), and C (300 g of MFP/L) presented higher ethanol and glycerol content. Beer C contained the highest antioxidant activity and total phenolic content. Worts' supplemented with MFP increased aroma formation.