This evaluation activity is the seventh wheat quality assessment organized by the Ministry of Agriculture. According to statistics from the Ministry of Agriculture and Grain Inspection Center, 12 provinces (regions) including Hebei, Shanxi, Inner Mongolia, Jiangsu, Anhui, Shandong, Henan, Hubei, Sichuan, Shaanxi, Gansu and Xinjiang participated in the 2008 wheat product sample collection and quality. Evaluation activities. Among the collected wheat samples, 1002 samples and 226 varieties participated in the review, including 966 samples of winter wheat and 202 varieties, and 36 samples of spring wheat and 24 varieties. The quality indicators of the test include six grain quality indicators such as wheat grain color, bulk density, water content, protein content, ash content, and falling value; six flour quality factors such as powder yield, pink, protein content, sedimentation value, ash content, and wet gluten content. Indicators; 6 items of dough characteristics such as water absorption rate, formation time, stabilization time, stretch area, elongation, and maximum resistance; and 3 items of baking or cooking quality indicators such as bread volume, bread score, and noodle score of the sample. Review. According to the usual practice, the evaluation is based on the import of the US DNS wheat, the implementation of the code number, on-site scoring.
From the aspect of weight, 1002 wheat samples accounted for 65.2% of the first-class (bulk density ≥ 790g/L); second-class (concentration ≥ 770g/L) accounted for 26.3%; third-class (concentration ≥ 750g/L) accounted for 7.4%; Such as (bulk weight ≥ 730g / L) accounted for 1.1%; Fifth (bulk weight ≥ 710g / L) accounted for 0.0%. Compared with the previous three years, the proportion of wheat in the first grade in 2008 continued to increase (as shown in Table 1).
In terms of gluten strength, there are 30 samples and 8 varieties that meet the requirements of the main indicators of high-quality wheat --- strong gluten wheat. These varieties are: Shanyou 9618, Jimai 20, Jimai No. 4, Jinan 17, Jinmai 1, Shijiao 02-1, Xinmai 18 and Zhengmai 366; Samples that reach the national standard strong gluten wheat have 20 There were 7 varieties, Jimai 20, Jinan 17, Xinong 979, Xinmai 18, Zhengmai 366, Zhengmai 9023 and Wanmai 12. The samples were mainly from Hebei, Shandong, and Henan provinces. The “Jimai 20†cultivated by the Shandong Academy of Agricultural Sciences was rated as high-quality strong gluten wheat in the national wheat quality assessment activities for four consecutive years. Compared with 2007, the number of samples of strong gluten wheat and the number of varieties increased significantly in 2008.
From the perspective of futures strong-gluten wheat contract quality requirements, according to Zhengzhou Commodity Exchange high-quality strong gluten wheat futures delivery standards: volume weight (≥770g/L), drop value (≥300s), wet gluten content (≥30.0%), stretch area (≥90cm2), dough stability time (1st ≥12.0min, 2nd ≥8.0min), evaluation results show that there are 66 samples and 15 varieties that meet the first-class evaluation index. The main varieties are Shanyou 9415, Jimai 20, Jinan 17, Jinmai 1, Shijiao 02-1, Xinmai 18, Yannong 19, Zhengmai 366, and Wanmai 12. The wheat samples that reached the second-class evaluation index included 22 samples and 9 varieties. The main varieties were Shanyou 9618, Gaoyou 503, Jimai 4, Jinan 17, Xinong 979, Xinmai 18, Zhengmai 366, Zheng Mai 9023 and buckwheat 12. Compared with 2007, the number of samples and varieties of gluten-resistant wheat reached the Zhengzhou Chamber of Commerce increased significantly in 2008. The planting areas for the strong gluten 1 and 2 wheat of Zhengzhou Chamber of Commerce were broader, with the exception of the main provinces of Hebei, Shandong and Henan, which also included Jiangsu and Anhui provinces.
From the perspective of baking quality, 1002 wheat samples were screened according to the bread production method GB14611-1993, with a bread score of ≥80 and a bread volume of ≥800 mL, and 141 samples and 23 varieties of wheat were consistent with the evaluation index. Most of the samples and varieties are distributed in Hebei, Shandong and Henan provinces. The main varieties are Shanyou 2018, Shanyou 9415, Shanyou 9618, Jimai 20, Jinan 17, Jinmai 1, Shannong 12, Shifen 02-1, Taimai 1, Xinmai 18, Yannong 19, and tobacco farmers. 23, Zheng Mai 366 and buckwheat 12, etc. Among them, Shanyou 9415, Shanyou 9618, Jimai 20, Jinan 17, Shizuo 02-1, Zhengmai 366, and Wanmai 12 had good bread baking quality in Hebei, Shandong, and Henan provinces for more than two consecutive years. Compared with 2007, the number of samples and the number of varieties of wheat with excellent bread baking quality were significantly increased in 2008.
From the perspective of cooking quality, the medium-strong gluten wheat standard according to cooking quality requirements has a bulk density of 770770 g/L, crude protein 1313.0%, a drop value of ≥300 s, a wet gluten 2828.0%, a dough stability time of ≥6.0 min, and a total noodle rating. According to the score of ≥ 80, the 1002 wheat samples were screened. There were 43 samples and 30 varieties of medium-strong gluten wheat that met the quality index. Compared with 2007, the number of samples and varieties increased significantly. Samples and varieties of strong medium-gluten wheat that meet the requirements of good cooking quality are mainly distributed in 9 provinces (regions) including Hebei, Shanxi, Inner Mongolia, Jiangsu, Anhui, Shandong, Henan, Gansu, and Xinjiang.
The above evaluation results are reflected in detail in the 2008 China Wheat Quality Report. Compared with the quality report of the previous two years, this year's wheat quality report covers a large number of varieties, a wide range of production areas, and the entire testing content, which fully reflects the development of high-quality special wheat in China and reflects the current production and quality of wheat in China. The report is organized by the Crop Management Division of the Ministry of Agriculture and the Ministry of Finance provides financial support. Samples are collected, tested, and reviewed by the three Grain Quality Supervision, Inspection and Test Centers of Beijing, Harbin, and Tai'an of the Ministry of Agriculture. The data reflected in the report is scientific and objective. It provides wheat quality information for wheat research, technology promotion, production management, circulation, and processing, and scientific recommendation to the agricultural sector and correct selection of high-quality wheat varieties by farmers. Acquisition and processing companies purchase High-quality special wheat raw materials, the market purchase and sale of points for the implementation of sub-reserve high quality and price policy, have very important practical value.
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