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Cooperative effects of slight acidic electrolyzed water combined with calcium sources on tissue calcium content, quality attributes, and bioactive compounds of 'Jiancui' jujube
Author(s) -
Li Xiaojuan,
Zhi Huanhuan,
Li Meng,
Liu Qiqi,
Xu Juan,
Dong Yu
Publication year - 2019
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10014
Subject(s) - chemistry , calcium , sodium hypochlorite , calcium hypochlorite , food science , calcium nitrate , postharvest , lightness , hypochlorite , horticulture , chlorine , inorganic chemistry , organic chemistry , physics , optics , biology
BACKGROUND Slight acidic electrolyzed water (SAEW) has been widely used in cleaning systems of fruit and vegetables. It strongly reduces microbial contamination. However, no information is available on whether SAEW offers the potential for fresh jujube cleaning. The purposes of this study were, first, to compare the effectiveness of SAEW with commercial sanitizers (i.e. sodium hypochlorite (NaClO) or calcium hypochlorite (Ca(ClO) 2 )) on 'Jiancui' jujube; second, to determine the response of fruit decay, tissue calcium (Ca) content, and quality attributes to dip application of calcium nitrate (Ca(NO 3 ) 2 ) by concentration; and third, to investigate the effects of SAEW combined with Ca(NO 3 ) 2 or calcium acetate (Ca(OAc) 2 )) on fruit Ca uptake, quality attributes, and bioactive compounds. RESULTS Fruits washed with NaClO, Ca(ClO) 2 , or an SAEW solution showed no difference in reduction of decay incidence. In contrast to NaClO treatment, SAEW or Ca(ClO) 2 significantly retarded losses in fruit firmness (FF), green color (hue angle), and skin lightness ( L *), and maintained intact pericarp tissue structure during storage at 1 °C. Application of Ca(NO 3 ) 2 at 5–10 g L −1 effectively promoted Ca 2+ uptake and minimized declines in FF and L * value but had no effect on decay development. Adding 10 g L −1 Ca(NO 3 ) 2 or Ca(OAc) 2 to SAEW provided an additional benefit in increasing decay resistance, increasing Ca 2+ into fruit and increasing levels of bioactive compounds in jujube fruit. CONCLUSION SAEW in combination with Ca(NO 3 ) 2 or Ca(OAc) 2 has commercial potential for fresh jujube disinfection and improving storage quality as a result of the cleaning processes. © 2019 Society of Chemical Industry