T/XZYZ 1-2020 Xiangyang Mao You

Scope

Main Technical Content: 5 Requirements 5.1 Natural Environment The raw materials used for Xiangyang sesame oil originate from regions with a subtropical monsoon climate, characterized by cold winters and hot summers, dry winters and rainy summers, with rainfall and temperature occurring simultaneously and distinct seasons. The average annual temperature is (15–16) °C, with a frost-free period of (228–249) days and annual precipitation of (820–1100) mm. The average total sunshine duration is (1800–2100) hours. The soil is primarily sandy loam and medium loam. 5.2 Raw Materials Xiangyang sesame oil should be made from sesame seeds grown in the areas specified in Chapter 4 of this standard. 5.3 Processing Techniques 5.3.1 Pressing Method: Screening, rinsing, roasting, smoke removal, pressing, filtering, and obtaining finished oil. 5.3.2 Water Substitution Method: Screening, rinsing, roasting, smoke removal, pulping, agitating, separating oil, and obtaining finished oil. 5.4 Basic Parameters The basic parameters of Xiangyang sesame oil are listed in Table 1. Table 1: Basic Parameter Indicators Index Refractive Index (n20) 1.4575–1.4792 Relative Density (d20/20) 0.915–0.924 Iodine Value (I/g) 104–120 Saponification Value (KOH) 186–195 Main Fatty Acid Composition (%) Palmitic Acid (C16:0) 7.9–12.0 Stearic Acid (C18:0) 4.5–6.9 Oleic Acid (C18:1) 34.4–45.5 Linoleic Acid (C18:2) 36.9–47.9 5.5 Sensory Characteristics Sensory characteristics are listed in Table 2. Table 2: Sensory Characteristics Grade First Grade Second Grade Color Orange-yellow to orange-red to brown-red Smell and Taste With a rich aroma and flavor characteristic of sesame oil, good texture, and no off-odors Transparency (20°C) Transparent with allowable slight turbidity 5.6 Physicochemical Indicators Physicochemical indicators are listed in Table 3. Table 3: Physicochemical Indicators Index Grade First Gra

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