It was reported by Dennis, Key, Papworth, Pointer, and Massey
(1990) that the mean nitrite content in bacon was 24.0 mg/kg and
for nitrate was 43.0 mg/kg, whereas nitrite and nitrate in ham were
56.0 and 22.0 mg/kg, respectively. They used similar extraction and
detection methods but with an anion exchange column. Both bacon
and ham products in this study contained less nitrate and nitrite
(Table 2) in comparison. Siu and Henshall (1998) who found
that nitrite and nitrate contents in salami were 108.0 and
98.5 mg/kg, respectively, and 11.6 and 5.4 mg/kg for ham, respectively.
Sample extraction procedures used in the current study
were similar to Marshall and Trenerry (1996), but they omitted
the heating step. This may explain the low nitrite content of less
than 10 mg/kg in salami, leg ham and bacon. However the nitrate
contents were higher at 141.5, 132.5 and 48.0 mg/kg, respectively.
Different cured meat products may require different ratio of nitrite
and nitrate as preservatives. Since fresh meat does not naturally
contain nitrite (Table 2), its nitrite and nitrate contents have not
been extensively tested. However, based on this study, the nitrate
content in minced beef and medallion beef were within the range
found in cured meat products (Table 2).
It was reported by Dennis, Key, Papworth, Pointer, and Massey(1990) that the mean nitrite content in bacon was 24.0 mg/kg andfor nitrate was 43.0 mg/kg, whereas nitrite and nitrate in ham were56.0 and 22.0 mg/kg, respectively. They used similar extraction anddetection methods but with an anion exchange column. Both baconand ham products in this study contained less nitrate and nitrite(Table 2) in comparison. Siu and Henshall (1998) who foundthat nitrite and nitrate contents in salami were 108.0 and98.5 mg/kg, respectively, and 11.6 and 5.4 mg/kg for ham, respectively.Sample extraction procedures used in the current studywere similar to Marshall and Trenerry (1996), but they omittedthe heating step. This may explain the low nitrite content of lessthan 10 mg/kg in salami, leg ham and bacon. However the nitratecontents were higher at 141.5, 132.5 and 48.0 mg/kg, respectively.Different cured meat products may require different ratio of nitriteand nitrate as preservatives. Since fresh meat does not naturallycontain nitrite (Table 2), its nitrite and nitrate contents have notbeen extensively tested. However, based on this study, the nitratecontent in minced beef and medallion beef were within the rangefound in cured meat products (Table 2).
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