現(xiàn)代食品科技 Modern Food Science and Technology 2023, Vol.39, No.10
160
不同冷凍方式對(duì)芒果塊凍結(jié)特性和品質(zhì)的影響
李鏡浩 1,2,張?jiān)姺f 3
,程麗娜 2*,余元善 2
,彭健 2
,李璐 2
,安可婧 2
,肖更生 1*
(1.仲愷農(nóng)業(yè)工程學(xué)院輕工食品學(xué)院,廣東廣州 510631)
(2.廣東省農(nóng)業(yè)科學(xué)院蠶業(yè)與農(nóng)產(chǎn)品加工研究所,農(nóng)業(yè)農(nóng)村部功能食品重點(diǎn)實(shí)驗(yàn)室,廣東省農(nóng)產(chǎn)品加工重點(diǎn)實(shí)驗(yàn)
室,廣東廣州 510610)(3.廣東藥科大學(xué)食品科學(xué)學(xué)院,廣東中山 528400)
摘要:探究了芒果塊在液氮噴霧速凍(Liquid Nitrogen Spray Freezing,LNF-40~-100 ℃)下的冷凍特性及品質(zhì)變化規(guī)律,并以冰柜
凍結(jié)(Refrigerator Freezing,RF-20 ℃)、浸漬冷凍(Normal Immersion Freezing,IF-20 ℃)作對(duì)比。結(jié)果表明:芒果的最大凍結(jié)濃縮狀態(tài)
的凍結(jié)終點(diǎn)溫度(T'm)為-17.98 ℃,放熱焓?H=-236.8 J/g;凍結(jié)速率(Freezing Rate,r)為 0.14~1.40 /min ℃ ,其中 LNF-100 ℃的 r 較
其他組分別提高了 900%~7.63%;換熱系數(shù)比值(d)較 RF-20 ℃組提高了 4.6 倍;冷凍總時(shí)間和穿過最大冰晶生成帶時(shí)間較 RF-20 ℃、
IF-20 ℃組分別縮短了 9 042、4 657 s,5 475、870 s;色澤也接近新鮮芒果;硬度保留率為 83.12%;汁液流失率為 2.75%;總酚、抗氧
化活性、Vc 保留率達(dá)到 90%以上;胞外多糖增加了 0.44 mg/g;冷凍前后的菌落總數(shù)降低 0.84 lg CFU/g;Pearson 分析出不同冷凍方
式對(duì)芒果塊品質(zhì)影響,?E、汁液流失率、總酚、Vc 可作為有效評(píng)價(jià)的依據(jù);聚類分析(Cluster Analysis,CA)證實(shí) LNF-100 ℃能顯著
降低芒果塊冷凍過程中質(zhì)量劣化。本研究為高品質(zhì)、高效率冷凍芒果發(fā)展提供了理論依據(jù)和技術(shù)指導(dǎo)。
關(guān)鍵詞:芒果塊;液氮噴霧速凍;凍結(jié)效率;凍結(jié)品質(zhì)
文章編號(hào):1673-9078(2023)10-160-169 DOI: 10.13982/j.mfst.1673-9078.2023.10.1195
Effects of Different Freezing Methods on the Freezing Characteristics and
Quality of Mango Chunks
LI Jinghao1,2, ZHANG Shiying3
, CHENG Lina2*, YU Yuanshan2
, PENG Jian2
, LI Lu2
, AN Kejing2
,
XIAO Gengsheng1*
(1.College of Food Science and Technology, Zhongkai University of Agricultural and Engineering, Guangzhou 510631,
China) (2.Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of
Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products
Processing, Guangzhou 510610, China)
(3.School of Food Science, Guangdong Pharmaceutical University, Zhongshan 510631, China)
Abstract: The freezing characteristics and quality changes of mango chunks under liquid nitrogen spray freezing (LNF-40~-100 ℃) were
investigated, and comparisons were made with those under refrigerator freezing (RF-20 ℃), and normal immersion freezing (IF-20 ℃). The results
show that the temperature for the maximum freez concentration of the mango was -17.98 , the exothermic enthalpy ℃ ?H was -236.8 J/g, and
the freezing rate (r) was 0.14~1.40 /min. Among them, the r of LNF ℃ -100 ℃ increased by 900%~7.63% compared with other groups; the ratio of
引文格式:
李鏡浩,張?jiān)姺f,程麗娜,等.不同冷凍方式對(duì)芒果塊凍結(jié)特性和品質(zhì)的影響[J].現(xiàn)代食品科技,2023,39(10):160-169
LI Jinghao, ZHANG Shiying, CHENG Lina, et al. Effects of different freezing methods on the freezing characteristics and quality of
mango chunks [J]. Modern Food Science and Technology, 2023, 39(10): 160-169
收稿日期:2022-09-20
基金項(xiàng)目:廣東省基礎(chǔ)與應(yīng)用基礎(chǔ)研究基金項(xiàng)目(2019A1515110559);廣東省農(nóng)業(yè)科學(xué)院“十四五”農(nóng)業(yè)優(yōu)勢(shì)產(chǎn)業(yè)學(xué)科團(tuán)隊(duì)(202109TD);廣州市青年科技人才
托舉項(xiàng)目資助(QT20220101055);廣東省農(nóng)業(yè)科技發(fā)展及資源環(huán)境保護(hù)管理項(xiàng)目(2022KJ108);廣東省農(nóng)業(yè)科學(xué)院科技人才引進(jìn)專項(xiàng)資金項(xiàng)目
(R2020YJ-YB2001);廣東省農(nóng)業(yè)科學(xué)院青年導(dǎo)師項(xiàng)目(R2020QD-031);廣東省現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)共性關(guān)鍵技術(shù)研發(fā)創(chuàng)新團(tuán)隊(duì)建設(shè)項(xiàng)目(2022KJ117)
作者簡(jiǎn)介:李鏡浩(1999-),男,碩士研究生,研究方向:食品加工與安全,E-mail:214016387@qq.com
通訊作者:程麗娜(1990-),女,博士,副研究員,研究方向:果蔬精深加工,E-mail:cheng.lina@mail.scut.edu.cn;共同通訊作者:肖更生(1965-),男,碩
士,教授,研究方向:果蔬精深加工,E-mail:guoshuxgs@163.com