CAJ | 학술논문

为了探讨花牛苹果虎皮病的发生机理,对‘俄矮二号’和‘卡迪’2种花牛主栽品种在(0±0.5)℃冷藏及冷藏8个月后模拟货架10 d(25℃)期间虎皮病的发病率、病情指数,以及果皮与果肉中α-法尼烯、共轭三烯、丙二醛(MDA)、总酚的含量和多酚氧化酶(PPO)活性进行测定分析.结果表明：冷藏5个月后花牛苹果果皮开始产生虎皮状病斑,6个月开始爆发,果肉始终无病斑出现；果皮中α-法尼烯、共轭三烯、MDA、总酚的平均含量及 PPO 的平均活性均极显著的高于果肉(P <0.01),虎皮病发生主要在果皮而非果肉；推测 PPO 主导的酶促褐变是虎皮病发生在果皮的主要原因,而共轭三烯的积累只是原因之一.
위료탐토화우평과호피병적발생궤리,대‘아왜이호’화‘잡적’2충화우주재품충재(0±0.5)℃랭장급랭장8개월후모의화가10 d(25℃)기간호피병적발병솔、병정지수,이급과피여과육중α-법니희、공액삼희、병이철(MDA)、총분적함량화다분양화매(PPO)활성진행측정분석.결과표명：랭장5개월후화우평과과피개시산생호피상병반,6개월개시폭발,과육시종무병반출현；과피중α-법니희、공액삼희、MDA、총분적평균함량급 PPO 적평균활성균겁현저적고우과육(P <0.01),호피병발생주요재과피이비과육；추측 PPO 주도적매촉갈변시호피병발생재과피적주요원인,이공액삼희적적루지시원인지일.
In order to understand the mechanism of superficial scald of apples,the physiological changes in peel and pulp of ‘Huaniu’apples related to superficial scald during cold storage were investigated.The disease rate and disease index of superficial scald of ‘Huaniu’apples (two main cultivar)were determined, the content of α-farnesene,conjugated trienes,malondialdehyde (MDA),total phenols and the activities of polyphenol oxidase (PPO)in peel and pulp were determined during the cold storage (0 ± 0.5 )℃ for 8 months,and then transferred to room temperature to simulate market shelf (25 ℃)for ten days.The re-sults showed that the scab of superficial scald started appearing in peel after 5 months of storage and then increased slightly after 6 months of storage.The scab of superficial scald unfound in pulp.The content ofα-farnesene,conjugated trienes,malondialdehyde (MDA)and total phenols in peel were significantly higher than its in pulp (P <0.01),so as polyphenol oxidase (PPO)activity.The physiological changes indicated superficial scald occurring only in peel.It is suggested that the enzymatic browning caused by PPO is more important than the accumulation of conjugated triene for superficial scald of ‘Huaniu’apples.