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首页> 外文会议>Sensing for agriculture and food quality and safety V >Determination of optimal excitation and emission wavebands for detection of defect cherry tomato by using fluorescence emission and excitation matrix
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Determination of optimal excitation and emission wavebands for detection of defect cherry tomato by using fluorescence emission and excitation matrix

机译：利用荧光发射和激发矩阵确定检测缺陷樱桃番茄的最佳激发和发射波段

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摘要

Fluorescence imaging technique has been widely used for quality and safety measurements of agro-food materials. Fluorescence emission intensities of target materials are influenced by wavelengths of excitation sources. Hence, selection of a proper excitation wavelength is an important factor in differentiating target materials effectively. In this study, optimal fluorescence excitation wavelength was determined on the basis of fluorescence emission intensity of defect and sound areas of cherry tomatoes. The result showed that fluorescence responses of defect and sound surfaces of cherry tomatoes were most significantly separated with the excitation light wavelength range between 400 and 410 nm. Fluorescence images of defect cherry tomatoes were acquired with the LEDs with the central wavelength of 410 nm as the excitation source to verify the detection efficiency of cherry tomato defects. The resultant fluorescence images showed that the defects were discriminated from sound areas on cherry tomatoes with above 98% accuracy. This study shows that high power LEDs as the excitation source for fluorescence imaging are suitable for defect detection of cherry tomatoes.
机译：荧光成像技术已被广泛用于农业食品材料的质量和安全性测量。目标材料的荧光发射强度受激发源波长的影响。因此，选择合适的激发波长是有效区分目标材料的重要因素。在这项研究中，最佳的荧光激发波长是根据缺陷番茄的荧光发射强度和樱桃的声音区域确定的。结果表明，在400至410 nm的激发光波长范围内，樱桃番茄缺陷和声音表面的荧光响应最明显。以中心波长为410 nm的LED为激发源，获取缺陷樱桃番茄的荧光图像，以验证樱桃缺陷的检测效率。所得的荧光图像表明，缺陷与樱桃番茄上的声音区域相区别，准确度达到98％以上。这项研究表明，大功率LED作为荧光成像的激发源适合于樱桃番茄的缺陷检测。

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