The invention relates to the technical field of fine
processing of agricultural products, and provides a method and a
system for quantitatively distinguishing peels of soft-
branch stock oranges and
processing type oranges, and the method comprises the following steps: S1 to S4, selecting two types of mature oranges, freeze-
drying and
grinding peels, and mixing the peels according to a preset proportion to obtain peel residues; weighing the same amount of the sample, adding
methanol, and carrying out ultrasonic extraction,
centrifugation and
filtration by a filter membrane to obtain a to-be-detected solution; and calculating the proportion of the
polyoxymethylene flavone
glycoside in the soft-
branch rootstock orange peel through HPLC (
High Performance Liquid Chromatography) detection by combining an integral
peak area of a
standard curve of the
polyoxymethylene flavone
glycoside. The invention further discloses a
system for executing the method. According to the method, the
polyoxymethylene flavone
glycoside is used as an index, HPLC detection and
standard curve calculation are combined, whether the fruit peel is contained or not can be clearly distinguished, the proportion can be accurately quantified, an objective traceable basis is provided, the cost is low, the popularization rate is high, the sample treatment process is applicable, and a safe and reliable scheme is provided for high-value utilization and
quality control of by-products in the citrus industry.