Content area
Full Text
http://crossmark.crossref.org/dialog/?doi=10.1007/s13197-016-2449-8&domain=pdf
Web End = J Food Sci Technol (January 2017) 54(1):174184 DOI 10.1007/s13197-016-2449-8
http://crossmark.crossref.org/dialog/?doi=10.1007/s13197-016-2449-8&domain=pdf
Web End = ORIGINAL ARTICLE
Optimizing spray drying conditions of sour cherry juice based on physicochemical properties, using response surface methodology (RSM)
Arasb Dabbagh Moghaddam1 Milad Pero1,2 Gholam Reza Askari3
Revised: 11 October 2016 / Accepted: 16 December 2016 / Published online: 19 January 2017 Association of Food Scientists & Technologists (India) 2017
Abstract In this study, the effects of main spray drying conditions such as inlet air temperature (100140 C), maltodextrin concentration (MDC: 3060%), and aspiration rate (AR) (3050%) on the physicochemical properties of sour cherry powder such as moisture content (MC), hygroscopicity, water solubility index (WSI), and bulk density were investigated. This investigation was carried out by employing response surface methodology and the process conditions were optimized by using this technique. The MC of the powder was negatively related to the linear effect of the MDC and inlet air temperature (IT) and directly related to the AR. Hygroscopicity of the powder was signicantly inuenced by the MDC. By increasing MDC in the juice, the hygroscopicity of the powder was decreased. MDC and inlet temperature had a positive effect, but the AR had a negative effect on the WSI of powder. MDC and inlet temperature negatively affected the bulk density of powder. By increasing these two variables, the bulk density of powder was decreased. The optimization procedure revealed that the following conditions resulted in a powder with the maximum solubility and minimum hygroscopicity: MDC = 60%, IT = 134 C, and
AR = 30% with a desirability of 0.875.
Keywords Fruit juice powder Sour cherry Spray
drying Optimization Response surface methodology
(RSM) Physicochemical properties
Introduction
Sour cherry is rich in bioactive compounds, including anthocyanin, polyphenols, and ascorbic acid. These compounds have many health benets such as anti-neurode-generation, anti-inammation, anti-cancer, which inhibits the growth of tumor cells, and are useful in diabetic control (Bobe et al. 2006; Kang et al. 2003; Lachin and Reza 2012).
Spray drying is the process of converting liquid materials into the powder form. The liquid is sprayed into a chamber and mixes with hot air that evaporates the moisture from the sprayed liquid, and as a result, its solid components will leave the chamber in the...