Table 1.
Effect of drying methods on isoflavone contents (μg/g) A in a powder with 1 % sodium alginate as carrier B.
| Isoflavone | Spray drying | Vacuum drying | Freeze drying |
|---|---|---|---|
| Mdin | 4,619±383c | 6,745±135b | 10,246±333a |
| Mglin | 3,321±331c | 3,788±261b | 4,625±137a |
| Mgin | 4,501±142b | 6,739±22a | 6,640±242a |
| Sub total | 12,441±572c | 17,272±657b | 21,510±437a |
| Din | 1,896±24b | 2,689±82a | 2,736±75a |
| Glin | 1,844±41b | 2,657±213a | 2,765±65a |
| Gin | 5,606±61b | 10,075±113a | 9,964±183a |
| Sub total | 9,346±44b | 15,421±408a | 15,464±322a |
| Adin | 285±4b | 635±38a | 638±42a |
| Aglin | 232±10c | 429±4b | 502±21a |
| Agin | 702±30b | 1,192±74a | 1,161±46a |
| Sub total | 1,219±44b | 2,255±208a | 2,300±67a |
| Dein | 428±44c | 1,138±20b | 1,255±10a |
| Glein | 182±10c | 946±18a | 606±47b |
| Gein | 230±59b | 1,408±33a | 1,288±128a |
| Sub total | 840±5c | 3,492±71a | 3,148±92b |
| Total | 23,847±577c | 38,240±1,061b | 42,423±734a |
A Average of duplicate analyses±standard deviation. B Symbols bearing different letters (a-c) in the same row are significantly different (P<0.05). Mdin: malonyldaidzin; Mglin: malonylglycitin; Mgin: malonylgenistin; Din: daidzin; Glin: glycitin; Gin: genistin; Adin: acetyldaidzin; Aglin: acetylglycitin; Agin: acetylgenistin; Dein: daidzein; Glein: glycitein; Gein: genistein.