Time course study of ethanol production by corn and soybean to optimize the use of ANA ethanol index as an accurate seed quality test
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Journal of New Seeds v. 3, no. 1, p. 1-16630886Summary: The ratio of ethanol production by seeds under anaerobic and aerobic conditions (ANA ethanol index) was shown to be a good indicator of seed quality in our previous studies. A time course study of ethanol production by corn (Zea mays L.) and soybean (Glycine max L. Merill) was conducted to identify the optimum hydration time for calcu- lation of the ANA ethanol index. In addition, microbial contamination was studied both from seeds after aging and after hydration. Seeds of corn and soybean were aged at 75% relative humidity and 45°C for 0 to 32 days to obtain different seed quality samples. Ethanol production increased with hydration time (0 to 24 hours), and production was greater for soybean than for corn. Ethanol production decreased with aging under anaerobic conditions, while a biphasic pattern was measured with aging under aerobic conditions after a 24 hour hydration period. The ANA ethanol index changed with both hydration time and seed quality. The optimal hydration time was 24 hours to rank seed quality for both species. Moreover, ANA ethanol index was positively related to germination rate for corn and soybean. Microbial contamination was minimal after aging or had negligible effects on ethanol production under aerobic and anaerobic hydration treatments.
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | CIS-3275 (Browse shelf(Opens below)) | 1 | Available | 630886 |
Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1522-886X
The ratio of ethanol production by seeds under anaerobic and aerobic conditions (ANA ethanol index) was shown to be a good indicator of seed quality in our previous studies. A time course study of ethanol production by corn (Zea mays L.) and soybean (Glycine max L. Merill) was conducted to identify the optimum hydration time for calcu- lation of the ANA ethanol index. In addition, microbial contamination was studied both from seeds after aging and after hydration. Seeds of corn and soybean were aged at 75% relative humidity and 45°C for 0 to 32 days to obtain different seed quality samples. Ethanol production increased with hydration time (0 to 24 hours), and production was greater for soybean than for corn. Ethanol production decreased with aging under anaerobic conditions, while a biphasic pattern was measured with aging under aerobic conditions after a 24 hour hydration period. The ANA ethanol index changed with both hydration time and seed quality. The optimal hydration time was 24 hours to rank seed quality for both species. Moreover, ANA ethanol index was positively related to germination rate for corn and soybean. Microbial contamination was minimal after aging or had negligible effects on ethanol production under aerobic and anaerobic hydration treatments.
English
0201|AGRIS-0201|AL-Maize Program|R01JOURN|3
Juan Carlos Mendieta
CIMMYT Staff Publications Collection
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