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1 6 3 Vol. 6 No Journal of Food Safety and Quality Mar., 2015 文连奎 *, 王珏琪 (, ) 摘要 : 目的, 方法,, 结果 : 95, 8 min, 200 mg/l, 2.08 mg/kg, 4.61 mg/kg 结论,, 关键词 : ; ; Research on the effect of green recovery agent containing copper to salted bracken and the change of copper content WEN Lian-Kui *, WANG Jue-Qi (College of Food Science and Engineering, Jilin Agricultural University, Changchun , China) ABSTRACT: Objective To determine the optimum process conditions of green recovery agent for the slated bracken and compare the content of copper before the recovery of green and after. Methods The different concentration, different blanching time and different blanching temperature of copper acetate green recovery agent were as factors to carry the single factor experiment and orthogonal experiment. The color change of salted bracken s was determined by hunter lab, the content of copper in salted bracken was determined by flame atomic absorption spectrophotometer. Results The optimum process conditions of the recovery of green as follow: blanching temperature 95, blanching time 8 min, green recovery agent concentration 200 mg/l, and the content of copper before and after the recovery of green was 2.08 mg/kg and 4.61 mg/kg, respectively. Conclusion Copper acetate green recovery agent has green recovery effect to salted bracken. In the best green recovery conditions, the copper content in bracken accords accord to the forestry industry standard limit, but the copper green recovery agent should not be used too much. KEY WORDS: green recovery agent; bracken; copper content * 通讯作者 :,, wenliankui@163.com *Corresponding author: WEN Lian-Kui, Professor, College of Food Science and Engineering, Jilin Agricultural University, Changchun , China. wenliankui@163.com

2 引言 (Pteridium aquilinum var. Latiusculum),,,,, [1,2],, [3] [4],,, [5,6] [6,7],,, [8,9],,, [10,11],,,, [12],,,,,, 2 材料与方法 2.1 试验材料 :, 1 mg/ml;, : : 试验方法 工艺流程 : : 操作要点,,, 10:1, 10 d, 20%,,,,,, (1) : [12-15] Table 1 表 1 试验仪器与设备 The instrument and equipment of test Color Flex () TAS-990 FW JQSJ 4000

3 3, : 817, 2 h, 4~6 h, (2) : 10 g, 250 ml, (T)(t) (C): 6 min 90, µg/ml; 200 µg/ml 6 min, ; 200 µg/ml 90, min,,, 2.3 测定方法 色泽测定,,,,, 50 ml,,,, 90,,,, /L*/a*, 铜元素含量测定 火焰原子吸收分光光度 [16] 计法, nm, 15 ma, 0.7 nm, 1500 ml/min, 9 nm : [16], 1000 mg/l µg/ml, :, 50 g, 120,,,, g,,,, 550 (±50 ) 4~6 h,, 1 ml (, : =1:4, v:v), 1000 ml,,, 3 结果与分析 3.1 色泽测定 单因素色泽测定结果 (1) Fig. 1 The brightness of the green recovery agent concentration of single factor test results 2 Fig. 2 The partial red green degree of the green recovery agent concentration of single factor test results 1 2, 6 min 90, 100~250 mg/l,, (), 150 mg/l,, mg/l (2) 3 4

4 818 6 Fig. 3 3 The brightness of blanching temperature single factor test results Fig. 6 6 The partial red green degree of blanching time single factor text results 5 6, mg/l, 2~8 min,, (), 4 min,, min 正交实验色泽测定结果与分析,, 2 3 Fig. 4 4 The partial red green degree of blanching temperature single factor text results 3 4, 6 min 200 mg/l, 80~95,, (), 85,, (3) 5 6 Table 2 表 2 醋酸铜正交实验亮度结果 The brightness of copper acetate orthogonal experiment results (A) min(b) mg/l(c) 1 1(85) 1(4) 1(150) (6) 2(200) (8) 3(250) (90) L* Fig. 5 5 The brightness of blanching time single factor test results 7 3(95) k k k K K K R

5 3, : 819 表 3 醋酸铜正交实验偏红绿程度结果 Table 3 The partial red green degree of copper acetate orthogonal experiment results / (A) /min(b) /(mg/l)(c) 1 1(85) 1(4) 1(150) (6) 2(200) (8) 3(250) (90) (95) k k k K K K a* 95 5 min 200 mg/l 3.2 铜含量测定结果, ;, [17,18], 4 ( 7), 18.7 mg/kg, 1:9, 2.08 mg/kg 3 LY/T , ( Cu ) 5 mg/kg,, 9, R , ;,,,, 30, 9, A 3 B 3 C 2, K A 3 B 3 C 3, K, L* 31.41, a*-6.54,, 9,, Fig. 7 7 The copper ion concentration standard curve Table 4 表 4 各试验组测定及折合后铜元素含量测定结果 The results of determination the content of copper in each experimental groups and the folded groups (mg/kg) (mg/kg)

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