Abstract
Abstract Ceramic fiber was found to be a suitable alternative to asbestos in determining the acid-insoluble lignin content of 59 forages by AOAC official final action method 7.074-7.077. Replacement of asbestos is necessary because it is a recognized carcinogen. Blank values for ceramic fiber were less than those for asbestos, and repeatability of duplicate lignin determinations was similar for both filter aids. Lignin content (%) by the ceramic fiber method (X), over the range 0.74-12.63%, was highly correlated (0.997) with that using the asbestos method (Y) by the relationship: Y = 1.008X - 0.093. Correction of forage lignin estimates using ceramic fiber is necessary if they are compared with those obtained using asbestos because of the negative Mas of 0.093%.
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Claims 5
Claim · model-written summary
Ceramic fiber is a suitable alternative to asbestos for determining acid-insoluble lignin content in forages.
Verbatim
e1“Ceramic fiber was found to be a suitable alternative to asbestos in determining the acid-insoluble lignin content of 59 forages”
Claim · model-written summary
Blank values for ceramic fiber are lower than those for asbestos.
Verbatim
e1“Ceramic fiber was found to be a suitable alternative to asbestos in determining the acid-insoluble lignin content of 59 forages”
e2“Blank values for ceramic fiber were less than those for asbestos”
Claim · model-written summary
Repeatability of duplicate lignin determinations is similar for ceramic fiber and asbestos.
Verbatim
e1“Ceramic fiber was found to be a suitable alternative to asbestos in determining the acid-insoluble lignin content of 59 forages”
e2“Blank values for ceramic fiber were less than those for asbestos”
e3“repeatability of duplicate lignin determinations was similar for both filter aids”
Claim · model-written summary
Ceramic fiber lignin content is highly correlated with asbestos lignin content (r = 0.997) over 0.74-12.63%.
Verbatim
e1“Ceramic fiber was found to be a suitable alternative to asbestos in determining the acid-insoluble lignin content of 59 forages”
e4“Lignin content (%) by the ceramic fiber method (X), over the range 0.74-12.63%, was highly correlated (0.997) with that using the asbestos method (Y)”
Claim · model-written summary
Forage lignin estimates from the ceramic fiber method must be corrected if they are compared with asbestos-based estimates.
Verbatim
e5“Correction of forage lignin estimates using ceramic fiber is necessary if they are compared with those obtained using asbestos”