Abstract：
To investigate the effect of CPPU (forchlorfenuron) on optical properties of strawberry during growth, the optical properties (absorption coefficient (μa) and reduced scattering coefficient (μs\')) of strawberry treated with CPPU solutions at different concentrations (0, 2.5, 5.0 and 7.5 mg/L) were measured in white, color turning and red stages by using a single integrating sphere system over near-infrared wavelength range of 900-1700 nm. The physicochemical properties, i.e., single fruit weight, soluble solids content, firmness and moisture content, as well as microstructure of strawberry were also investigated. The results showed that in white stage, the μa of strawberry treated with 7.5 mg/L CPPU was significantly (p ≤ 0.05) lower than that of untreated strawberry at absorption peak of 1411 nm. In color turning stage, the μs\' of strawberry treated with 5 mg/L CPPU was significantly lower than that of treated with 2.5 mg/L at absorption peaks of 975, 1197 and 1411 nm. In red stage, the μa of strawberry treated with 2.5 mg/L CPPU was significantly (p ≤ 0.05) different from that of treated with 7.5 mg/L at 1197 nm. The study indicates that the optical properties of strawberry were affected by CPPU, and it provides useful information for identifying CPPU treated strawberry.
摘要：
研究CPPU对草莓生长过程中光学特性的影响,用不同浓度（0、2.5、5.0和7.5mg/L）的CPPU溶液处理的草莓的光学性质（吸收系数（μa）和降低的散射系数（μs））以白色测量，在900-1700nm的近红外波长范围内使用单个积分球系统进行颜色转向和红色阶段。物理化学性质，即，单果重量,可溶性固形物含量，硬度和水分含量，以及草莓的微观结构进行了研究。结果表明,在白种阶段,在1411nm的吸收峰，用7.5mg/LCPPU处理的草莓的μa显着（p≤0.05）低于未处理的草莓。在色彩转向阶段，在975、1197和1411nm的吸收峰，用5mg/LCPPU处理的草莓的μs\'明显低于用2.5mg/L处理的草莓。在红色阶段，在1197nm处，用2.5mg/LCPPU处理的草莓的μa与用7.5mg/L处理的草莓的μa显着差异（p≤0.05）。研究表明,CPPU对草莓的光学性质有一定的影响,它为识别CPPU处理的草莓提供了有用的信息。
