摘 要: 以3個南高叢越橘(Vaccinium corymbosum)品種和2個兔眼越橘(V. ashei)品種為試材,進行了果實品質、糖酸組分、抗氧化物質及其能力的比較分析。結果表明,5個品種中,南高叢越橘品種密斯黛(Misty)的果形最大,園藍(Gardem Blue)果實的可溶性固形物含量最高,而粉藍(Powderblue) 和密斯黛(Misty)果實的可滴定酸含量都較低。越橘果肉中的可溶性糖以葡萄糖和果糖為主;有機酸包括檸檬酸、蘋果酸、奎尼酸和酒石酸,不同品種間有機酸含量和比例有一定的差異。越橘果實的主要抗氧化物質為花色苷、酚類和類黃酮化合物,其中,粉藍果實的花色苷含量最高,園藍果實的總酚和類黃酮含量最高。通過DPPH、TEAC和FRAP檢測,園藍和粉藍的抗氧化能力較強。
關鍵詞: 越橘; 果實品質; 抗氧化能力
中圖分類號:S663.6 文獻標識碼:A 文章編號:1009-9980?穴2011?雪06-1045-05
Comparison of quality, major bioactive compound content and antioxidant capacity between Southern high-bush blueberries (Vaccinium corymbosum) and rabbit-eye blueberries (Vaccinium ashei)
WU Hui1,2,ZHANG Hui-qin2,MA Chang-nian1,2,XIE Ming2*
(Department of Horticulture, Nanjing University, Nanjing,Jiangsu 210095 China; 2Institute of Horticulture,Zhejiang Academy of Agricultural Sciences , Hangzhou, Zhejiang 310021 China)
Abstract: Three southern high-bush blueberry (Vaccinium corymbosum) and two rabbit-eye blueberr (V. ashei) cultivars were involved in the experiment. Fruit quality ,sugar and acid composition , antioxidant properties and activity were analyzed. Results showed that of the 5 cultivars, Misty produced the biggest fruit, Gardenblue had the highest soluble solids content, while Powderblue and Misty had the lower titratable acid. Glucose and fructose were the predominant sugars in the pulp; the main acid were citric acid, malic acid, quinic acid and tartaric acid, and different cultivars showed remarkable difference in organic acid compositions. Anthocyanins, phenolics and flavonoids were the main antioxidant compounds and Powderblue had the highest total anthocyanin content, while Gardenblue had the highest phenolic and flavonoid content. Gardenblue and Powderblue showed higher antioxidant activity than the other cultivars, as measured by assays of 1,1-diphenyl-2-picrylhydraz scavenging(DPPH) , 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) scavenging(TEAC) and Ferric reducing antioxidant power(FRAP).
Key words: Blueberry; Fruit quality; Antioxidant capacity
越橘為杜鵑花科(Ericaceae)越橘屬(Vaccinium L.)植物,其果實中富含多種抗氧化物質,如花色苷、原花青素、綠原酸、黃酮醇等多酚類物質及有機酸、維生素C,維生素E等[1],能有效阻止人體內低密度脂肪酸的氧化和減緩、減少各種疾病的發生[2],其醫療保健作用備受人們的青睞。
越橘是我國重要新興水果之一,浙江是發展越橘栽培較快的省份,主要栽植兔眼越橘(Vaccinium ashei)和南高叢越橘(V. corymbosum)。近年來,國內對越橘的研究愈來愈多,但主要集中于品種篩選、栽培技術和苗木繁育等方面,對越橘果實品質和抗氧化能力的研究較少。本試驗以適于浙江地區栽培的3個南高叢越橘品種和2個兔眼越橘品種為材料,進行了品質、糖酸組分、抗氧化物質及其能力等方面的比較和分析,以期為越橘品種選擇和果實加工利用提供幫助。……