Utilization of Dried Apple Pomace as a Press Aid to Improve the Quality of Strawberry, Raspberry, and Blueberry Juices

Abstract

We analyzed the effects of press aids on strawberry, raspberry, and blueberry juice quality and evaluated the effectiveness of dried apple pomace as an alternative press aid. Juice yields with apple pomace were similar to the yields from using rice hulls and paper. Triangle difference tests showed that there were differences between the berry juices pressed with conventional press aid to the berry juices pressed with apple pomace press aid, and paired comparison preference tests showed that the berry juices pressed with apple pomace were preferred. Flavor analysis using gas chromatography-olfactometry indicated possible off-flavors being extracted from rice hulls, such as indole and 4-vinylguaical, and from paper, such as (Z)-2-octenal and 2-nonenal, into the berry juices.

Determination of simple sugars, malic acid and total phenolic compounds in apple pomace by infrared spectroscopy and PLSR

“…Apple pomace can be used as a substrate for the production of fungal chitosan (Streit et al. , 2009), components of aroma and other volatile compounds (Almosnino & Belin, 1991; Roberts et al. , 2004), organic acids (Shojaosadati & Babaeipour, 2002; Gullón et al.…”

“…Apple pomace can be used as a substrate for the production of fungal chitosan (Streit et al, 2009), components of aroma and other volatile compounds (Almosnino & Belin, 1991;Roberts et al, 2004), organic acids (Shojaosadati & Babaeipour, 2002;Gullo´n et al, 2008a), enzymes (Berovic & Ostroversnik, 1997;Villas-Boas et al, 2002), supplement for animal feed (Villas-Boas et al, 2003) and ethanol having better quality than that obtained by the use of sugar-cane (Ngadi & Correia, 1992;Chatanta et al, 2008). Additionally, apple pomace has been studied for its potential use as a nutritional and functional food additive, mainly due to its high antioxidant capacity and fiber content (Sudha et al, 2007;Garcı´a et al, 2009;Vitali et al, 2009).…”

Thermal self-sustainability of biochar production by pyrolysis

“…This solid residue consists of a complex mixture of peel, core, seed, calyx, stem, and soft tissue. Large amounts of apple pomace are produced worldwide (27,000 tons in United States, 2004 [8]). This material is highly biodegradable and its disposal represents a serious environmental problem [9].…”

Determining the rational modes for low-temperature storage and for obtaining products of Japanese Quince processing with high consumer properties

“…Fruit and berry raw materials are characterized by a short storage term, which determines the need to study the ways of processing for the year-round supply of population with the given products [2]. One of the unique ways to preserve food and biological value of fruits and berries is low temperature freezing.…”