粮油检验 稻谷出糙率检验法编制说明

PAGEPAGE4《稻谷出糙率检验法》编制说明（送审稿）一、前言稻谷“出糙率”是《稻谷》国家标准中重要的质量指标之一，该指标的设置对于促进稻谷质量品质的提高发挥了重要的作用。原稻谷出糙率检验方法随着《稻谷》国家标准的更新，有必要进一步完善，制定规范的出糙率检验的国家标准方法。二、修订原则为适应社会主义市场经济体制、进一步深化改革的总体要求，为市场服务、为企业服务。遵循标准要有良好的适应性、可行性、方便性的原则。三、工作情况联合籼稻谷和粳稻谷主产省质检机构，各选择10个有代表性籼稻谷和粳稻谷样品，出糙稻谷重量分别为原标准的20g和拟修订的10～15g，做对比试验。对测试结果进行分析，确定出糙稻谷重量。四、标准的主要技术思路1．统一和优化检验的技术要求；2．将本标准与《稻谷整精米率检验法》国家标准相统一；3．提高检验速率和时效性。五、主要技术（特点）要求1．通过辽宁、湖北两省所作的对比试验。对粳稻谷和籼稻谷，10g出糙稻谷重组的出糙率标准偏差最大值为0.4545，3倍的标准偏差值为1.3635而《稻谷》标准中出糙率等级差2.0%。同一试验样品两对照组出糙率极差最大值为0.5%，平均值为0.20%，远低于现出糙率标准中规定的0.5%误差范围。所以可以认为在减少样品重量，能够保证检验的一致性，并且加快了检验速度。数据见表1、表2及附件。表1粳稻谷出糙率数据对比样品编号10g20g均值A标准偏差A变异系数A均值B标准偏差B变异系数B极差值1#83.90.35610.424484.30.14180.16820.42#80.80.14590.180680.60.01860.02310.23#81.30.05490.067681.30.16260.20010.14#81.20.06840.084381.20.10980.13530.05#82.40.20060.243582.60.08210.09940.16#82.40.11440.138982.70.05250.06350.37#82.10.12300.149981.80.01540.01890.38#81.30.12100.148781.80.10560.12900.59#82.10.14620.178081.90.14390.17580.310#81.60.11010.134881.50.15550.19070.1平均值0.14410.17510.09880.12040.22表2籼稻谷出糙率数据对比样品编号10g20g出糙率均值标准偏差A变异系数A出糙率均值标准偏差B变异系数B极差值1#76.40.15820.207176.50.41090.53680.22#82.00.45450.554082.10.12490.15210.13#78.40.14980.191278.60.11460.14580.24#79.10.26030.329279.20.03870.04880.25#78.90.11220.142179.10.15340.19390.26#78.50.17320.220778.60.15860.20180.17#78.10.18810.240778.10.48620.62270.18#78.90.19450.246579.10.28820.36440.29#85.30.16590.194585.00.09030.10630.310#77.60.21270.274378.00.12070.15480.4平均值0.20690.26000.19860.25270.182.修订内容项目称样量，克原标准20拟修订10～153．增加了与方法相关的术语和定义。4．新标准一经实施，代替现行的国家标准GB/T5495-85。附件：1稻谷出糙率检验法验证实验结果记录表测试单位:辽宁省粮油检验监测所测试用设备型号：JLGJ4.5测试时间:2008样品名称1#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.2010.1510.1610.170.0260.260220.6920.6320.5420.620.07550.3661糙米重(my,g)8.648.628.678.640.02520.291217.6017.4917.4917.530.06350.3624不完善粒重(mw,g)0.240.140.280.220.072132.77770.270.260.320.280.032111.3455完善粒(m,g)8.408.488.398.420.04930.585617.3317.2317.1717.240.08080.4688出糙率/%83.584.284.083.90.35610.424484.484.184.484.30.14180.1682样品名称2#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.5410.0210.3910.320.2682.594320.2220.0520.0920.120.08890.4418糙米重(my,g)8.738.388.628.580.17902.086816.9316.5416.7416.740.19501.1652不完善粒重(mw,g)0.450.590.420.490.090718.64471.260.751.101.040.260825.1606完善粒(m,g)8.287.798.208.090.26293.249315.6715.7915.6415.700.07940.5056出糙率/%80.780.780.980.80.14590.180680.680.680.680.60.01860.0231样品名称3#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0810.0410.5810.230.3012.940320.1720.0520.0420.090.07230.3601糙米重(my,g)8.418.308.818.510.26843.155116.7916.6416.6416.690.08660.5189不完善粒重(mw,g)0.430.280.400.370.079421.45200.820.750.640.740.090712.3173完善粒(m,g)7.988.028.418.140.23762.919615.9715.8916.0015.950.05690.3564出糙率/%81.381.381.481.30.05490.067681.281.181.481.30.16260.2001样品名称4#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.2810.3410.4310.350.0750.729520.0420.0620.1120.070.03610.1796糙米重(my,g)8.578.638.768.650.09711.122416.6716.8116.7016.730.07370.4407不完善粒重(mw,g)0.460.460.600.510.080815.95310.841.060.700.870.181520.9395完善粒(m,g)8.118.178.168.150.03210.394615.8315.7516.0015.860.12770.8050出糙率/%81.181.281.181.20.06840.084381.181.281.381.20.10980.1353样品名称5#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0810.0010.0310.040.0400.402720.0220.0320.0120.020.01000.0500糙米重(my,g)8.438.378.378.390.03460.412916.7116.7316.7016.710.01530.0914不完善粒重(mw,g)0.200.270.240.240.035114.83890.400.360.350.370.02657.1507完善粒(m,g)8.238.108.138.150.06810.834916.3116.3716.3516.340.03060.1869出糙率/%82.682.482.382.40.20060.243582.582.682.682.60.08210.0994样品名称6#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0310.0110.0510.030.0200.199420.0520.0020.0620.040.03210.1604糙米重(my,g)8.398.388.388.380.00580.068916.8416.7816.8116.810.03000.1785不完善粒重(mw,g)0.260.250.230.250.01536.19270.530.460.460.480.04048.3616完善粒(m,g)8.138.138.158.140.01150.141916.3116.3216.3516.330.02080.1275出糙率/%82.482.582.282.40.11440.138982.782.882.782.70.05250.0635样品名称7#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0010.0110.0310.010.0150.152520.0420.0620.0120.040.02520.1256糙米重(my,g)8.408.388.378.380.01530.182216.7416.7616.7216.740.02000.1195不完善粒重(mw,g)0.360.330.300.330.03009.09090.690.700.690.690.00580.8327完善粒(m,g)8.048.058.078.050.01530.189716.0516.0616.0316.050.01530.0952出糙率/%82.282.182.082.10.12300.149981.881.881.881.80.01540.0189样品名称8#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0210.0210.0110.020.0060.057620.0120.0020.0120.010.00580.0289糙米重(my,g)8.298.308.278.290.01530.184316.6016.6216.5716.600.02520.1516不完善粒重(mw,g)0.290.270.270.280.01154.17360.400.520.420.450.064314.3935完善粒(m,g)8.008.038.008.010.01730.216216.2016.1016.1516.150.05000.3096出糙率/%81.381.581.381.30.12100.148782.081.881.881.80.10560.1290样品名称9#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0210.0010.0110.010.0100.099920.0220.0020.0020.010.01150.0577糙米重(my,g)8.368.378.358.360.01000.119616.7016.7016.6716.690.01730.1038不完善粒重(mw,g)0.250.350.240.280.060821.72420.580.630.660.620.04046.4836完善粒(m,g)8.118.028.118.080.05200.643116.1216.0716.0116.070.05510.3428出糙率/%82.282.082.282.10.14620.178082.081.981.781.90.14390.1758样品名称10#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)10.0210.0310.0110.020.0100.099820.0120.0020.0020.000.00580.0289糙米重(my,g)8.288.318.298.290.01530.184216.6316.5816.6016.600.02520.1516不完善粒重(mw,g)0.220.220.240.230.01155.09430.560.600.590.580.02083.5686完善粒(m,g)8.068.098.058.070.02080.258116.0715.9816.0116.020.04580.2861出糙率/%81.581.881.681.60.11010.134881.781.481.581.50.15550.1907稻谷出糙率检验法验证实验结果记录表测试单位:湖北省粮油检验监测所测试用设备型号：测试时间:2008样品名称1#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7312.7412.7012.720.0210.163620.0020.0120.0120.010.00580.0289糙米重(my,g)9.809.839.809.810.01730.176615.4215.5115.4415.460.04730.3057不完善粒重(mw,g)0.180.210.150.180.030016.66670.350.200.300.280.076426.9563完善粒(m,g)9.629.629.659.630.01730.179915.0715.3115.1415.170.12340.8134出糙率/%76.376.376.676.40.15820.207176.277.076.476.50.41090.5368样品名称2#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7212.6312.6812.680.0450.355720.0220.0220.0220.020.00000.0000糙米重(my,g)10.6210.5010.5410.550.06110.579016.6816.6316.6416.650.02650.1589不完善粒重(mw,g)0.240.360.330.310.062420.14520.430.380.450.420.03618.5846完善粒(m,g)10.3810.1410.2110.240.12341.204916.2516.2516.1916.230.03460.2134出糙率/%82.581.781.882.00.45450.554082.282.182.082.10.12490.1521样品名称3#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7512.7012.7312.730.0250.197720.0020.0020.0020.000.00000.0000糙米重(my,g)10.1710.1410.1610.160.01530.150415.9616.0016.0015.990.02310.1445不完善粒重(mw,g)0.310.400.380.360.047313.00680.460.630.570.550.086215.5813完善粒(m,g)9.869.749.789.790.06110.623915.5015.3715.4315.430.06510.4216出糙率/%78.578.378.378.40.14980.191278.778.478.678.60.11460.1458样品名称4#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.6912.6312.6512.660.0310.241420.0220.0220.0020.010.01150.0577糙米重(my,g)10.1410.0610.0810.090.04160.412515.9815.9815.9515.970.01730.1085不完善粒重(mw,g)0.140.170.210.170.035120.26090.250.220.200.220.025211.2684完善粒(m,g)10.009.899.879.920.07000.705615.7315.7615.7515.750.01530.0970出糙率/%79.479.078.979.10.26030.329279.279.379.379.20.03870.0488样品名称5#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7812.7412.7512.760.0210.163220.0120.0220.0020.010.01000.0500糙米重(my,g)10.2810.2110.2310.240.03610.352116.0816.1816.0916.120.05510.3417不完善粒重(mw,g)0.360.340.330.340.01534.44910.540.620.580.580.04006.8966完善粒(m,g)9.929.879.909.900.02520.254315.5415.5615.5115.540.02520.1620出糙率/%79.078.878.978.90.11220.142179.079.379.079.10.15340.1939样品名称6#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7312.7412.7112.730.0150.120020.0220.0020.0020.010.01150.0577糙米重(my,g)10.0310.0310.0310.030.00000.000015.8115.7415.7815.780.03510.2226不完善粒重(mw,g)0.060.120.090.090.030033.33330.080.090.150.110.037935.4932完善粒(m,g)9.979.919.949.940.03000.301815.7315.6515.6315.670.05290.3377出糙率/%78.678.378.678.50.17320.220778.878.578.578.60.15860.2018样品名称7#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7212.7312.7012.720.0150.120120.0020.0220.0220.010.01150.0577糙米重(my,g)10.2010.1610.1510.170.02650.260215.9916.1016.0316.040.05570.3471不完善粒重(mw,g)0.580.400.430.470.096420.51840.950.750.790.830.105812.7506完善粒(m,g)9.629.769.729.700.07210.743415.0415.3515.2415.210.15721.0333出糙率/%77.978.278.278.10.18810.240777.678.578.178.10.48620.6227样品名称8#项目测试1测试2测试3均值A标准偏差A变异系数A测试1测试2测试3均值B标准偏差B变异系数B净稻谷重(mj,g)12.7312.7112.7412.730.0150.120020.0020.0220.0220.010.01150.0577糙米重(my,g)10.2510.2010.2710.240.03610.352116.0216.1616.1316.100.07370.4577不完善粒重(mw,g)0.380.400.410.400.01533.85090.480.520.650.5