EFFECT OF SOUR CHERRIES DRYING TECHNIQUE ON TEXTURAL PROPERTIES OF DRIED FRUIT ASSESSED USING ACOUSTIC AND MECHANICAL METHODS
Journal Title: Żywność. Nauka. Technologia. Jakość - Year 2013, Vol 20, Issue 4
Abstract
The objective of this study was to analyze the effect of sour cherries drying technique and process parameters on textural properties of dried fruits assessed using acoustic and mechanical methods. The stoned and frozen sour cherries were dried using different techniques: convection, microwave, vacuum, and sublimation. Determined were the moisture and water activity as well as the porosity of the fruits dried. Compression tests were performed on each single dried cherry fruit and, at the same time, the acoustic emission (AE) was registered by a contact method. The technique and parameters of the process of sour cherries drying impacted their textural properties, which were assessed based on the analysis of acoustic emission descriptors and mechanical parameters. The occurrence of three groups of dried sour cherries was found; those groups differed in their textural properties. The increase in the temperature of the freeze drying process from 30 to 50 °C caused the number of EA events and the compression work to increase. During the convective drying process, the increase in the temperature from 50 to 70 °C caused the amplitude of the sound to significantly increase, the number of EA events to decrease, and the compression force and work to increase. During the compression test on dried cherries, the raise in the microwave power from 100 to 300 W caused the generation of acoustic emission that had decreasing amplitude, increasing number of EA events, and a significantly lower compression work and force. The EA descriptors and mechanical properties of the sour cherries dried using various drying techniques were negatively correlated with the humidity of dried cherry fruits.
Authors and Affiliations
Agata Marzec, Hanna Kowalska, Beata Ołdak
Keywords
Related Articles
- EP ID EP110174
- DOI http://dx.doi.org/10.151.93/zntj/2013/89/210-221
- Views 80
- Downloads 0
ZASTOSOWANIE KROPEK KWANTOWYCH DO OZNACZANIA SKŁADNIKÓW I ZANIECZYSZCZEŃ ŻYWNOŚCI
Kropki kwantowe (QD) są półprzewodnikowymi nanostrukturami o średnicy 1 ÷ 100 nm, zdolnymi do fotoluminescencji. W roztworach oddziaływania pomiędzy atomami na powierzchni kropki kwantowej i otaczającymi je cząsteczkam...
EFFECT OF PULLULAN ADDITIVE ON GROWTH AND FERMENTATION CAPACITY OF SOME SELECTED BACTERIA OF GENUS LACTOBACILLUS
The effect was studied of pullulan additive on the growth and fermentation capacity of nine strains of lactic acid bacteria of the genus Lactobacillus. Deep batch cultures were grown during a period of 24 h in an MRS c...
CHOSEN QUALITY FACTORS OF SOPOCKA TENDERLOINS PACKAGED UNCHILLED (MODEL RESEARCH)
In order to increase their shelf life, cured meat elements to be use for the production of Sopocka Tenderloins were coated with bacteriostatic substances: sodium lactate, potassium sorbate, mixture of sodium lactate and...
Fluorescencyjna hybrydyzacja in situ w identyfikacji i ocenie aktywności fizjologicznej Lactobacillus spp. w soku z jagód goji
W związku z popularyzacją trendu „Super Food” konsumenci oczekują obecności na rynku produktów o szerokim spektrum oddziaływania na organizm człowieka. Sok z jagód goji charakteryzuje się wieloma dobroczynnymi właściwośc...
Uwarunkowania akceptacji konsumenckiej innowacyjnych produktów żywnościowych
W artykule omówiono wpływ różnych czynników na akceptację innowacyjnego produktu żywnościowego. Wykazano, że o akceptacji innowacji decyduje wiele czynników, które można pogrupować w trzy kategorie: cechy systemu społecz...