Development of Special Modified Atmosphere Packaging for Fresh-cut Rape

doi:10.11923/j.issn.2095-4050.cjas20191100258

Abstract

Abstract:

To meet the needs of fresh-cut rape packaging, this paper adopted the combination of the packaging bags with the modified atmosphere (MA) windows of different permeability and different areas to conduct the tests, and through the analysis of the sensory quality and gas composition in the packaging bags of fresh-cut rape, developed the optimum modified atmosphere packaging (MAP) of fresh-cut rape. The results showed that the suitable MA window for fresh-cut rape was: the transmittance rates of O₂ and CO₂ were 4×10⁵ and 1.6×10⁶ cm³/(m²·d·atm), respectively; the area of rape needed was 2~6 cm²/kg. Comparing the permeability of modified atmosphere window and film, the permeability amount of O₂ and CO₂in packaging bags suitable for fresh-cut rape should be 2.08×10³-2.99×10³ and 0.96×10⁴-1.32×10⁴cm³/(kg·d·atm) respectively, which could solve the problem of odor and maintain shelf quality for more than 5 days. When the appropriate gas concentration of fresh-cut rape was reached, O₂ was 6.50%-9.69% and CO₂ was 6.46%-7.10%. The MAP bag can not only improve the storage quality of fresh-cut rape and make fresh-cut rape in the appropriate gas state, but also solve the odor problem caused by anaerobic breathing, and retain the original smell of fresh-cut rape and prolong the shelf life.

Key words: Fresh-cut, Rape, Modified Atmosphere, Packaging, Shelf-life

CLC Number:

TS255.3

Feng Yanyan, Wang Qingguo. Development of Special Modified Atmosphere Packaging for Fresh-cut Rape[J]. Journal of Agriculture, 2021, 11(5): 68-73.

Figures/Tables 4

References 25

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指标	分值	评分标准	指标	分值	评分标准
总体质量评价	9	品质较好,无瑕疵	腐烂	1	无腐烂
	7	品质下降,但可接受		2	轻微腐烂(<10%)
	5	不可接受,失去商品价值		3	中度腐烂(10%~30%)
	3	品质较差		4	严重腐烂(30%~50%)
	1	完全劣变		5	腐败变质(>50%)
颜色	1	鲜绿,视觉效果良好	气味	5	特有清香
	2	绿,轻微黄化,视觉效果下降		4	较清香
	3	叶片中出现片状黄化		3	气味较淡
	4	黄化较严重		2	气味极轻微
	5	完全黄化		1	无原有气味
失水	1	新鲜脆嫩,无失水	异味	1	无异味
	2	轻度失水,无萎蔫		2	稍有异味
	3	轻微萎蔫		3	异味严重
	4	中度萎蔫		4	发臭
	5	严重萎蔫		5	严重发臭

指标	分值	评分标准	指标	分值	评分标准
总体质量评价	9	品质较好,无瑕疵	腐烂	1	无腐烂
	7	品质下降,但可接受		2	轻微腐烂(<10%)
	5	不可接受,失去商品价值		3	中度腐烂(10%~30%)
	3	品质较差		4	严重腐烂(30%~50%)
	1	完全劣变		5	腐败变质(>50%)
颜色	1	鲜绿,视觉效果良好	气味	5	特有清香
	2	绿,轻微黄化,视觉效果下降		4	较清香
	3	叶片中出现片状黄化		3	气味较淡
	4	黄化较严重		2	气味极轻微
	5	完全黄化		1	无原有气味
失水	1	新鲜脆嫩,无失水	异味	1	无异味
	2	轻度失水,无萎蔫		2	稍有异味
	3	轻微萎蔫		3	异味严重
	4	中度萎蔫		4	发臭
	5	严重萎蔫		5	严重发臭

所需包装膜面积/ (m²/kg)	所需气调窗面积/ (m²/kg)	包装袋O₂透过量/ [cm³/(kg·d·atm)]	包装袋CO₂透过量/ [cm³/(kg·d·atm)]	袋内O₂含量开始稳定时间/d	O₂含量/ %	袋内CO₂含量开始稳定时间/d	CO₂含量/ %
0.35	0	2.83×10²	1.34×10³	6	1.13±0.10	6	16.98±0.34
	2×10^-4	2.08×10³	0.96×10⁴	6	6.50±0.20	6	7.10±0.13
	6×10^-4	2.99×10³	1.32×10⁴	6	9.69±0.20	6	6.46±0.17

所需包装膜面积/ (m²/kg)	所需气调窗面积/ (m²/kg)	包装袋O₂透过量/ [cm³/(kg·d·atm)]	包装袋CO₂透过量/ [cm³/(kg·d·atm)]	袋内O₂含量开始稳定时间/d	O₂含量/ %	袋内CO₂含量开始稳定时间/d	CO₂含量/ %
0.35	0	2.83×10²	1.34×10³	6	1.13±0.10	6	16.98±0.34
	2×10^-4	2.08×10³	0.96×10⁴	6	6.50±0.20	6	7.10±0.13
	6×10^-4	2.99×10³	1.32×10⁴	6	9.69±0.20	6	6.46±0.17