摘要
近年来世界农药正在向高效、安全、使用方便的方向发展。同时 ,由于竞争加剧 ,农药行业正在走向"联合“之路。本文介绍了农药的现状 ,并对市场。
High_effect,safe and easy_to_use products are the forward way of agrochemicals.The agrochemicals industry is trend to towards co_operation with increasing competition in recent years.The paper introduces the development status of agrochemicals industry and gives analysis and prospect for its market,industry and R&DKey words: world agrochemicals status future prospect ABSTRACT Starch from amaranth (Amaranthus cruentus) and quinoa (Chenopodium quinoa) was isolated and investigated by using enzymatic assay, Rapid Visco Analysis (RVA), Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM) and X-Ray Diffractometry (XRD). Amylose content measured with enzymology was 7.8 and 11.2% for amaranth and quinoa starch respectively. Quinoa starch was much more viscous than amaranth starch, while gelatinized at a lower temperature as determined with RVA. DSC demonstrated a wider range of gelatinization temperature for amaranth starch (20.6℃) than quinoa starch (11.1℃). SEM observation revealed polygonal shape of starch granules, and XRD suggested a typical A type diffraction pattern for both in question. A crystallinity of 45.5% for amaranth starch and 35.4% for quinoa starch respectively, was also figured out from the XRD collected data.\;
出处
《农药科学与管理》
CAS
2000年第2期33-37,共5页
Pesticide Science and Administration
