摘要
为了延长荞麦半干面的常温货架期,以聚偏二氯乙烯(PVDC)和聚乙烯(PE)为包装材料,采用不同活性包装方式(脱氧包装和脱氧结合酒精缓释包装)对其进行包装处理。考察脱氧剂、酒精缓释剂和不同包装材料对荞麦半干面货架期和储藏期间品质的影响。测定荞麦半干面在储藏期间菌落总数、酸度值、p H值、质构特性、感官品质和包装袋内顶空氧气含量、顶空酒精浓度的变化。结果表明:储藏期间菌落总数整体呈现上升趋势,脱氧结合酒精缓释包装协同抑制微生物生长。储藏9 d后,脱氧结合酒精缓释包装的面条菌落总数均未超过106cfu/g,同时显著抑制了理化品质的劣变(P<0.05);脱氧剂的吸氧量越大,24 h内除氧速率越快,抑菌效果越显著;相同活性包装方式下,与PE包装材料相比,PVDC包装材料能增强其延长荞麦半干面常温货架期的作用效果。与其他包装方式相比,脱氧(200 m L)结合酒精缓释PVDC包装将荞麦半干面货架期延长至16 d,并且维持了面条储藏期间的品质。
In order to extend the shelf life of semi-dried buckwheat noodles at ambient temperature, different active packaging methods [oxygen scavenger （OS） and oxygen scavenger combined with an ethanol emitter （OS＋EE）] were applied to pack the semi-dried buckwheat noodles, and polyvinylidene chloride （PVDC） and polyethylene （PE） were used as packaging materials. The effect of oxygen scavenger, ethanol emitter and different packaging materials on the shelf life and quality properties of semi-dried buckwheat noodles was investigated during storage at ambient temperature. Changes in total plate count （TPC）, acidity value, pH value, texture property, sensory quality of semi-dried buckwheat noodles and in-package headspace oxygen content and headspace ethanol concentration were monitored during storage. Results suggested that the TPC increased for all samples during storage, the combination of OS and EE delayed the growth of microorganism synergistically. The TPC of all the samples packaged with OS＋EE did not exceed 10^6 cfu/g after 9 d storage, meanwhile physicochemical deteriorations were retarded significantly （P〈0.05）. The greater capacity of oxygen scavenger, the higher O2-scavenging rates within 24 h, and the more remarkable antibacterial effect. With the same packaging method, PVDC packaging material showed higher ability on enhancing the efficiency of shelf life extension of semi-dried buckwheat noodles by active packaging than PE. OS200＋EE30＋PVDC prolonged the shelf life of semi-dried buckwheat noodles to 16 d and maintained the quality during storage, when compared with other package methods.
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2017年第12期31-37,共7页
Journal of the Chinese Cereals and Oils Association
基金
国家自然科学基金(31371849)
关键词
活性包装
脱氧剂
酒精缓释剂
包装材料
货架期
active packaging, oxygen scavenger, ethanol emitter, packaging material, shelf life
