【摘要】 以乌龙岭龙眼为原料,筛选龙眼防腐褐变保鲜剂,研究确定其MAP保鲜技术。实验表明:以半胱氨酸、硫脲、尿素、2,4-D及磷酸二氢钾组成的保鲜剂处理对抑制龙眼果皮褐变均有效果,其中以加有半胱氨酸或硫脲的B、D保鲜剂处理的综合保鲜效果最好;乌龙岭龙眼MAP保鲜的最佳参数为,贮藏温度(5±1)℃,PE膜厚度0.03 mm,单位透气面积的装果量为5~7 kg。贮藏40 d好果率达96.5%,褐变指数为68.4%,果肉可溶性固形物为20.2%,总糖15.6%,还原糖2.9%,百克果肉含维生素C 74.6 mg。更多还原

【Abstract】 Antisepsis and browning resistance and MAP storage technique for Wulongling longan were studied,the results showed that antistaling agent composed of halfcystine,thiorea,urea,2,4-D and potassium phosphate monobasic could inhibit browning of longan,the B and D treatments composed of halfcystine or thiorea had the best effect in all the treatments;the optimum parameters of MAP storage technique were packaged fruit weight 5~7 kg/m~2 with 0.03 mm polyethylene film at(5±1)℃.After 40 days storage,the healthy fruit,browning index,soluble solid content,total sugar,reducing sugar and Vc were 96.5%,(68.4%),20.2%,15.6%,2.9% and 74.6 mg/100 g respectively.更多还原