近红外光谱分析技术在蔬菜品质无损检测中的应用研究进展

蔬菜的无损检测技术包括利用其电学特性、光学特性、声波振动特性以及核磁共振技术、机器视觉技术、电子鼻技术和撞击技术等,其中应用最广泛、最成功的检测方法是光学方法.近红外光谱分析技术因分析速度快、效率高、成本低、重现性好,无需样品备制,无污染等特点,已成为一种快速、无损的现代分析技术,在很多领域得到广泛应用.文章介绍了国内外运用近红外光谱分析技术进行蔬菜品质无损检测的研究情况,分析了该技术应用于蔬菜品质检测时尚存在的问题和今后的研究方向.提出因蔬菜多样性和易腐变性等特点,需要加快研制近红外自动分析设备,以提高蔬菜品质检测的速度.指出结合核磁共振技术、图像技术等进行蔬菜品质的无损检测是未来发展的趋势.

Application of Near Infrared Spectroscopy Technique to Nondestructive Measurement of Vegetable Quality

Nondestructive detection techniques of vegetable include electrical properties,optical reflectance and transmission,sonic vibration,nuclear magnetic resonance(NMR),machine vision,aromatic volatile emission,vibration characteristics and others.The most widely employed and successful technique is to use its optical property.Near infrared spectroscopy technique is extremely fast,highly efficient,cheap to implement,of good recurrence and no sample preparation,and is a rapid and non-destructive modern measuring technique that has been widely used in many fields.In the present paper,the application of near infrared spectroscopy technique to nondestructive measurement of vegetable quality was briefly introduced.Some considerable aspects existing in the application were also discussed,and it is pointed out that because of vegetable's diversity and rot-proneness,automation analysis machine should be developed to improve the speed of quality detection,and cooperating with several other nondestructive techniques,such as NMR and machine vision,is the research trend.