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oil extraction and analysis phần 1

Có những tuyên bố nhiều giai thoại như vậy tính đã được nghe trong các phương pháp và các ủy ban hàng hoá của nhiều tổ chức quốc gia và quốc tế "lỗi trong các phép đo gần đúng của X là chi phí / mất hàng triệu công nghiệp". Mặt khác, giá hợp đồng giữa nhà cung cấp và người tiêu dùng nguyên liệu được viết chặt chẽ hơn hơn bao giờ hết. Kết quả là độ chính xác và tính chính xác của các phương pháp phân tích được sử dụng để hỗ trợ các hợp đồng này. | Chapter 1 The Commercial Significance of Oil Content Analysis The Position of Official Methods Richard C. Cantrill AOCS Champaign IL 61821 Introduction There are many anecdotal claims that the error in the measurement of proximate X is costing losing the industry millions. Such a charge has been heard in the methods and commodity committees of many national and international organizations. On the other hand contractual specifications between suppliers and consumers of raw materials are being written much more tightly than ever before. The result is that the precision and accuracy of the methods of analysis used to support these contracts are routinely being questioned. Such circumstances have led the Federation of Oils Seeds and Fats Associations Ltd. FOSFA International to study the contractual method for sunflower seed oil content and modify it to include the determination of moisture both before and after grinding before the oil extraction step. The original FOSFA Contractual Method was previously adopted by ISO TC 34 SC 2 Oleaginous Seeds and Fruits and Oilseed Meals and developed as ISO 659 it is also reproduced as AOCS Am 2-93. Other standards development organizations SDO such as AOCS AOAC International CEN ISO and Codex Alimentarius are faced with similar problems as the globalization of world standards follows the need to open up world trade. The existence of many versions of the same analytical method in the standards arena is complicated by the routine practice of translating these standards into company standard operating procedures SOP and the existence of more variant methodologies. Differences in regional customs training and language also contribute to the diversity of analytical methods. All of these considerations have a large effect on both the trade of oilseeds and the introduction of new or modified value-added crops into the specialty and niche markets and the acceptance of improvements to existing commodity oilseeds. Oil Markets Trade in oils