Dec 1, 2022 19:48
1 yr ago
41 viewers *
English term
sa
English
Science
Livestock / Animal Husbandry
Chemical analysis
This appears in an animal husbandry text I'm revising. I would like to know what the (sa) stands for "lignin (sa)", and why it appears in lowercase letters rather than uppercase. I have already asked the client and he doesn't know.
"Relative chemical composition of the gastric content was analysed for dry matter (DM), ashes (ASH), crude protein (CP), Ether extract (EE), neutral detergent fibre (aNDFom), acid detergent fibre (ADFom) and lignin (sa), samples were analysed according to the methods of AOAC (2000) [20]: 934.01 for DM, 942.05 for ash and 976.06 for CP."
"Relative chemical composition of the gastric content was analysed for dry matter (DM), ashes (ASH), crude protein (CP), Ether extract (EE), neutral detergent fibre (aNDFom), acid detergent fibre (ADFom) and lignin (sa), samples were analysed according to the methods of AOAC (2000) [20]: 934.01 for DM, 942.05 for ash and 976.06 for CP."
Responses
| 3 +4 | sulfuric acid |
Althea Draper
|
| 2 -1 | salt |
Bashiqa
|
Responses
+4
24 mins
Althea Draper
United Kingdom
United Kingdom
Native in English
&
English
United Kingdom
Freelance Medical Translator, MA (Hons)
Native in: English (Variants: British, Scottish) 
Works in: French to English, Spanish to English, English
Related KudoZ points
:
8
Selected
sulfuric acid
"Lignin (sa) = Sulfuric acid lignin; Lignin (pm) = Permanganate lignin"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4093211/table/t...
"The spectroscopic acetyl bromide lignin (ABL) and two versions of the gravimetric sulfuric acid lignin method [Lignin (sa)] were compared for their correlations with in vitro forage dry matter (IVDMD) and neutral detergent fiber degradability (IVNDFD) assays of 73 grass and legume samples. "
https://www.sciencedirect.com/science/article/pii/S037784011...
"Amylase neutral detergent fiber organic matter basis (aNDFom), acid detergent fiber organic matter basis (ADFom), and sulfuric acid lignin (Lignin (sa)) values obtained using crucibles (C) were compared ..."
https://agris.fao.org/agris-search/search.do;jsessionid=9BB3...
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Note added at 2 hrs (2022-12-01 22:08:43 GMT)
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I don't know why lower case is used, however as Tony points out, it may be because it is not the name of a substance, but the method used to detect it. Alternatively, it may be because lignin SA is frequently used to mean lignin surface area - see https://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra0...
https://aaltodoc.aalto.fi/bitstream/handle/123456789/13824/A...
I asked a chemistry teacher who trained in biochemisty too but they don't know why it's wee letters either.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4093211/table/t...
"The spectroscopic acetyl bromide lignin (ABL) and two versions of the gravimetric sulfuric acid lignin method [Lignin (sa)] were compared for their correlations with in vitro forage dry matter (IVDMD) and neutral detergent fiber degradability (IVNDFD) assays of 73 grass and legume samples. "
https://www.sciencedirect.com/science/article/pii/S037784011...
"Amylase neutral detergent fiber organic matter basis (aNDFom), acid detergent fiber organic matter basis (ADFom), and sulfuric acid lignin (Lignin (sa)) values obtained using crucibles (C) were compared ..."
https://agris.fao.org/agris-search/search.do;jsessionid=9BB3...
--------------------------------------------------
Note added at 2 hrs (2022-12-01 22:08:43 GMT)
--------------------------------------------------
I don't know why lower case is used, however as Tony points out, it may be because it is not the name of a substance, but the method used to detect it. Alternatively, it may be because lignin SA is frequently used to mean lignin surface area - see https://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra0...
https://aaltodoc.aalto.fi/bitstream/handle/123456789/13824/A...
I asked a chemistry teacher who trained in biochemisty too but they don't know why it's wee letters either.
Note from asker:
| Yes, I've seen it written this way in several places, but my query is WHY IS IT IN LOWER CASE? I mean, dry matter is DM... I know that Spanish authors are not very good at using uppercase letters for abbreviations, but I've seen "sa" in lowercase over the place, and would like to know the rationale, if there is one. |
| For example, in Emmanuela's link, it appears in capitals: "salicylic acid (SA)"... So, does that mean they put it in lowercase when it refers to sulphuric acid to distinguish it from salicylic? |
4 KudoZ points awarded for this answer.
Comment: "Thanks to everyone who chipped in on this one. Cheers to Clauwolf and Alison for the links, and Tony for the lowercase explanation."
-1
22 mins
salt
Not much more than a guess i`m afraid.
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