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標(biāo)題: 關(guān)于揮發(fā)性鹽基氮的問(wèn)題請(qǐng)指教 [打印本頁(yè)]

作者: guolupu    時(shí)間: 2011-2-20 14:08
標(biāo)題: 關(guān)于揮發(fā)性鹽基氮的問(wèn)題請(qǐng)指教
在魚(yú)粉中,揮發(fā)性鹽基氮的指標(biāo)是多少,而在做出來(lái)的結(jié)果誤差范圍是多少呢?請(qǐng)教高人,謝謝
作者: lilyyang    時(shí)間: 2011-2-20 14:19
魚(yú)粉的理化指標(biāo) fish meal nutrient specification and quality grade
項(xiàng)目 item
specification
Special grade
First grade
Second grade
Third grade
粗蛋白質(zhì)/%protein
≥65
≥60
≥55
≥50
粗脂肪/%fat
≤11(red fish meal)
≤9(white fish meal)
≤12(red fish meal)
≤10(white fish meal)
≤13
≤14
水分/%moisture
≤10
≤10
≤10
≤10
鹽分(以NaCL計(jì))/%salt
≤2
≤3
≤3
≤4
灰分/%ash
≤16(red fish meal)
≤18(white fish meal)
≤18(red fish meal)
≤20(white fish meal)
≤20
≤23
砂分/%sand
≤1.5
≤2
≤3
賴氨酸/%lysine
≥4.6(red fish meal)
≥4.4(white fish meal)
≥3.6(red fish meal)
≥3.4white fish meal)
≥4.2
≥3.8
蛋氨酸/%met
≥1.7(red fish meal)
≥1.5(white fish meal)
≥1.5(red fish meal)
≥1.3(white fish meal)
≥1.3
胃蛋白酶消化率/%pepsin digestibility
≥90(red fish meal)
≥88(white fish meal)
≥88(red fish meal)
≥86(white fish meal)
≥85
揮發(fā)性鹽基氮(VBN/( mg/100g)
≤110
≤130
≤150
油脂酸價(jià)( KOH)/(mg/g) acid value
≤3
≤5
≤7
尿素/%urea
≤0.3
≤0.7
組胺(mg/g) histamine
≤300(red fish meal)
≤500(red fish meal)
≤1000(red fish meal)
≤1500(red fish meal)
≤40(white fish meal)
( 6價(jià)鉻計(jì))(mg/g) Cr
≤8
粉碎粒度/%granularity
≥96(通過(guò)篩孔為2.8mm的標(biāo)準(zhǔn)篩)(pass 2.8mm sieve)
雜質(zhì)/%impurity
不含有非魚(yú)粉原料的含氮物質(zhì)(植物油餅粕、皮革粉、羽毛粉、尿素、血粉、肉骨粉等)以及加工魚(yú)露的廢渣
No content another raw material except fish meal, no content NPN, urea, feather meal, blood meal, bone meal,

作者: 陳魚(yú)落雁    時(shí)間: 2011-2-20 15:07
我也正在求這東東呢




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