2022-2023年美国玉米出口货物质量报告-英-90页_9mb

2022/2023 Corn Export Cargo Quality Summary

Key Highlights

• Grade Factors: Average test weight (58.0 lb/bu) was high, BCFM (2.7%) slightly up from previous years but below grade limits, total damage (2.3%) remained low, and heat damage was consistently absent.
• Chemical Composition: Protein (8.7%) and oil (3.9%) concentrations were higher, while starch (71.9%) was similar to previous year but lower than five-year averages.
• Physical Factors: Kernel sizes and volumes decreased slightly in some regions, but whole kernels and horneous endosperm percentages were mostly above grade thresholds.
• Mycotoxins: Aflatoxin levels were below the FDA action level (0.0 ppb), and DON/fumonisin levels were generally low, with no samples exceeding advisory levels.
• Impact of Marketing Channel: Moderate changes in quality observed due to handling, drying, and storage, with better uniformity at export.

Supporting Information

• The report provides detailed data on corn grades, definitions, and conversions for reference.
• Acknowledgments recognize various organizations and individuals involved in data collection and analysis.
• Statistical methods ensure reliable and comparable results across years.