Formulation of a fermentation substrate from pineapple and sacha inchi wastes to grow Weissella cibaria

Abstract

Gold honey variety pineapple wastes and sacha inchi sub-products (SIS) were characterized in their elemental, physical, and chemical form in order to formulate a supplemented fermentation substrate (SFS) for the growth Weissella cibaria. The peels and fresh cores of the pineapple (FPP, FPC) were dried and ground (PPP, PPC) and then mixed (MCPP). The following procedures were then undertaken: a physicochemical characterization (moisture, a w , pH, acidity, and soluble solids) of the SIS, FPP, FPC, PPP, and PPC; a proximal characterization of he FPP, FPC, SIS, and SFS; and an elemental analysis (C-N 2-H 2-O 2-S) of the MCPP, SIS, and W. cibaria, which allowed the stoichiometric equation to be defined and the SFS to be formulated. We then evaluated the effect that homogenization and heating to boiling point had on the concentration of reducing sugars in the SFS (g L À1). Finally, W. cibarias kinetic fermentation parameters were evaluated in the SFS and in a commercial substrate (control). The results showed FPP and FPC yields of 26.02 AE 0.58 and 14.69 AE 1.13%, respectively; a higher total sugar content in FPC (7.21%) than in FPP (6.65%); a high crude protein content in SIS (56.70%), and a C:N 2 ratio of 6.50:1.00. Moreover, the highest concentration of reducing sugars (4.44 AE 0.29 g L À1) in the SFS was obtained with 5 h of hydrolysis under homogenization pre-treatments and heating until boiling. The SFS allowed the adaptation of W. cibaria, and there was a biomass production of 2.93 g L À1 and a viability of 9.88 log CFU mL À1. The formulation of an unconventional fermentation substrate from-Agro-industrial wastes of pineapple and sacha inchi to produce valuable products (such as lactic acid biomass through fermentation), is an excellent perspective for large-scale application.

Influence of Ultrasound Application in Fermented Pineapple Peel on Total Phenolic Content and Antioxidant Activity

“…The use of agro-industrial wastes to produce bioactive compounds has been studied in recent years [1][2][3]. Due to the lignocellulosic composition of these substrates, they can be used as sources of macro or micronutrients, and as sources of carbon and nitrogen in fermentation processes [4].…”

Phytochemical Screening and Antioxidant Activities of the Seedling Extracts from Inca Peanut Plukenetia volubilis

“…The seed obtained with mainly oil, which is characterized by having a high unsaturated fatty acid content including oleic, linoleic, and linolenic acid. The oil extraction process generates a sub-product with high protein contents 10 . Inca peanut seeds contained the largest amount of protein (62.07%) and carbohydrates (82.68%).…”

Procyanidins: From Agro-Industrial Waste to Food as Bioactive Molecules

“…Several studies have been conducted to extract and recover bioactive compounds from agro-industrial wastes which can generate value-added products in different production chains while preserving environmental balance. The agro-industrial wastes commonly indicated in the literature correspond to the production chains of coffee, cocoa, wood, processed foods, and fruit (grapes, apples, limes, cranberries, lychee, avocado, noni, pineapple) [ 57 , 58 ]. This last category covers considerable amounts of residues due to the wide range of food products demanded by the market through the processing of fruit crops.…”