延长香榧坚果保藏期的试验研究

Research on the Extension of Shelf Life for Torreya Grandis Nuts

为了延长香榧坚果的保藏期,分别考察了添加抗氧化剂、脱氧剂以及不同包装材料对香榧贮藏期间品质的影响。研究了贮藏期间酸价、过氧化值、p-茴香胺值和碘值的变化规律,探寻延缓香榧氧化酸败的方法。研究结果表明:添加抗氧化剂、脱氧剂及复合材料包装均能不同程度地延缓香榧氧化酸败进程,提高香榧坚果贮藏的稳定性;复合抗氧化剂的抗氧化性能优于单一抗氧化剂,最优复配方案为"0. 015 g100 g TBHQ+0. 010 g100 g BHT";相对于其他包装材料,采用铝膜牛皮纸复合材料包装香榧坚果更能维持其贮藏期间的品质;加入脱氧剂可有效抑制香榧酸败劣变,提高其贮藏性能。

In order to extend the shelf life of torreya grandis nuts,effects of antioxidant,deoxidant and different packaging materials on the quality properties of torreya grandis nuts are investigated during storage.Changes in acid value,peroxide value,p-anisidine value and iodine value are monitored for discussing the methods of inhibiting oxidation.Results indicate that antioxidant,deoxidant and composite packaging could all reduce the oxidation and rancidity process in varying degrees,and improve the storage stability of products.The combined antioxidant has obvious synergistic effect,and the antioxidant combined with 0.015g/100g TBHQ,0.010g/100g BHT is the best.Torreya grandis nuts packaging with kraft/aluminium foil maintains the quality during storage,when compared with other packaging materials.Adding deoxidant could effectively inhibit oil rancidity,and improve the storage properties.