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ƒ ½ ¨ 7 Hë H Sae Mulli (The Korean Physical Society), Volume 54, Number 3, 2007¸ 3 Z 4, pp. 162∼165

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(1)

 ƒ  ½ ¨ 7 Hë  H  Sae Mulli (The Korean Physical Society), Volume 54, Number 3, 2007¸   3 Z 4, pp. 162∼165

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Òí ß –@ /† < Ɠ §  ” ¸& ñ ˜ Й èF / B N † < Æõ , x 9 € ª œ 627-706 (2007¸   1 Z 4 24{ 9  ~ à Î6 £ §)

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r ƒ  ½ ¨\ " f  H “ : r • ¸7 £ x \    É r à ÔY U½ + ɖ ÐÝ ¼ Ä »o _  / å J o  ïr × ¼   ½ + Ë_     o\  ¦ Raman specroscopy\  ¦ s 6   x # Œ 8 £ ¤& ñ % i  . / å J À ҝ ïÝ ¼ ì  r  ç ß – ”  1 l x \  _ K  1140 cm

−1

  H % ƒ\ " f      H /

å

J o  ïr × ¼   ½ + Ë\  @ /ô  Ç Raman i ” `  ¦ ì  r$ 3 ô  Ç   õ  “ : r • ¸7 £ x \    É r Raman i ”     o_  l Ö  ¦ l  162

C \ " f    % i  . s    õ – РÒ'  à ÔY U½ + ɖ ÐÝ ¼ ì  r  ? /_  / å J À ҝ ïÝ ¼ ì  r  ç ß –_    ½ + Ës  162

C \ " f     l

 r  Œ •ô  Ç   H  כ `  ¦ S X ‰ “   ½ + É Ã º e ” % 3  .

PACS numbers: 07.20.Fw, 61.10.Eq, 61.43.Fs, 78.30.Ly Keywords: Ä »o , à ÔY U½ + ɖ ÐÝ ¼, / å J o  ïr × ¼   ½ + Ë,  ë ß – í ß –ê ø Í

I. " e  ] Ø

t

F K  t  [ O „ ½ ӓ É r Ò q tÓ ü t ^ ‰_  ½ ¨$ í $ í ì  r s    Ö ¸1 l x _  \  - t

" é ¶ Ü ¼– Ð s 6   x ÷ &  H & ñ • ¸– Ðë ß – Ò q ty Œ •÷ &# Q M ® o  . Õ ª Q  þ j



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 â

Ä º\  [ O „ ½ Óõ    ½ + ˝ ) a { © œé ß –Ñ þ ˜| 9  < ʓ É r { © œt | 9 _  + þ AI \  ¦ Ä

»t  “ ¦ e ” 6 £ § s  µ 1 ß) €& ’ “ ¦, s  M : ò ø Íà º oÓ ü t `  ¦ o “ ¦ Q[ þ t s

 [ jŸ íç ß –_  ’    ñ„  ² ú ˜ x 9 [ jŸ í$ í  © œõ  ì  r  o › ¸] X \  ×  æ כ ¹ ô

 Ç % i ½ + É`  ¦ { Œ ™{ © œô  Ç   H  z  ´s  5 Å q5 Å q µ 1 ß) €t “ ¦ e ”  . ÷  r ë ß –



m  , a ž =Ó  o+ þ A`  ¦   & ñ   H † ½ Ó" é ¶ ½ ¨› ¸ % i r  a ž =½ ¨ [ jŸ í }

Œ

• ü @ Ò\   o ô  Ç [ O „ ½ Ós  9, # î " é ¶ ^ ‰[ þ t s    ½ + Ë   H X <• ¸ [ O

„ ½ Ó_  ½ ¨› ¸ ×  æ כ ¹ô  Ç % i ½ + É`  ¦ † < ÊÜ ¼– Ð+ ‹, €  % i >  › ¸] X  x 9

€

Œ

™ u « Ñ\ • ¸ ×  æ כ ¹ô  Ç é ß –" f ÷ &“ ¦ e ”  .

:

£

¤ y  þ j   H \   H Ò q t" î ^ ‰  [ jŸ í ¢ ¸  H Ó ü t| 9 s  [ O „ ½ Ó ([ O „ ½ Ó

×

 æ \ " f• ¸ : £ ¤ y  é ß –{ © œÀ Ó  s { © œÀ Ó)`  ¦ Ÿ í† < Ê “ ¦ e ”   H  â Ä º

\

 F G $ “ : r  © œI   » 1 Ïà º  © œI  ° ú  “ É r F G ô  Ç  © œ S ! \ " f [ O „ ½ Ós  Ä

»o  © œ`  ¦ + þ A$ í # Œ [ jŸ í õ ÷ &t  · ú §“ ¦ ˜ Д > r ÷ &• ¸2 Ÿ ¤ • ¸ ü

<Šҍ  H cryopreservation s   anhydrobiosis ü < ° ú  “ É r “ ˜ Ð

E-mail: [email protected]

 

ñ: £ ¤$ í ”\  @ /ô  Ç ƒ  ½ ¨  õ  ´ ú §s  µ 1 ϳ ð÷ &“ ¦ e ”   [1–3].

[ O

„ ½ ÓÄ »o  s  Qô  Ç ˜ Р ñ: £ ¤$ í `  ¦ t   H s Ä »  H ‰ & ³F  t  ß

¼>  ¿ º t – Ð · ú ˜ 94 R e ”   H X <, Õ ª ×  æ    H [ O „ ½ Óõ  Ó ü t s

 ™ D ¥ ½ + Ë  © œI – Ð ” > r F ½ + É M : [ O „ ½ Ós  Ä »o  © œ`  ¦ + þ A$ í  9 Ó ü t _

  €  ^ ‰ (tetrahedral) ½ ¨› ¸\  g Ë >È ÒK  # Q  H& h  s  \ " f Ó

ü

t _    & ñ  o\  ¦ ~ ½ ÓK    H ´ òõ  e ” l  M :ë  H s  9,   É r 



  H [ O „ ½ ÓÄ »o _  : £ ¤$ í  © œ [ jŸ í} Œ •s   a ž =Ó  o° ú  s  Ò q t" î ^ ‰\  ¦

½

¨$ í   H Ó ü t| 9 [ þ t \  ~ 1 >  g Ë >È ÒK  $ “ : r s   » 1 Ïà º © œI \ " f ì

 r   õ ÷ &  H  כ `  ¦ } Œ •  Å Òl  M :ë  H s  . z  ´] j– Ð t F K



t _  z  ´+ « >   õ \   Ø Ô€   [ O „ ½ ÓÄ »o _  [ jŸ í ˜ Р ñ0 p x§ 4 

“ É

r [ O „ ½ Ó_  7 á x À Ó\      Ø Ô>       H X < # Œ Q t  [ O 

„ ½

Ó[ þ t ×  æ \ " f• ¸ : £ ¤ y  s { © œÀ ӓ   à ÔY U½ + ɖ ÐÝ ¼ (trehalose)

þ

j   H › ' a d ” _  @ / © œs  ÷ &“ ¦ e ”   H Ó ü t| 9 s  . à ÔY U½ + ɖ ÐÝ ¼\  ¦

Ÿ

í† < Ê “ ¦ e ”   H d ” Ó ü t s   [ jŸ íz  ´+ « >\ " f ˜ Р ñ: £ ¤$ í s  ¿ º× ¼



Qt >    è ß –   H  כ s  # Œ Q t  z  ´+ « >`  ¦ : Ÿ x K  ‰ & ³ © œ& h  Ü

¼– Ð · ú ˜ 94 R e ” Ü ¼  [4–8] ˜ Р ñ: £ ¤$ í \  @ /ô  Ç   H‘ : r& h “   s  Ä

»  H  f ”  t  S X ‰ z  ´y  µ 1 ß) €t t  · ú §“ ¦ e ”  .

‘

: r ƒ  ½ ¨\ " f  H s  Qô  Ç à ÔY U½ + ɖ ÐÝ ¼_  ˜ Р ñ: £ ¤$ í \  @ /ô  Ç

"

é

¶ “  `  ¦ ½ ©" î l  0 A # Œ “ : r • ¸   o\    É r à ÔY U½ + ɖ ÐÝ ¼_  ì

 r  _  / å J o  ïr × ¼   ½ + Ë_     o\  ¦ › ' a8 £ ¤ % i  . ‘ : r ƒ  ½ ¨

-162-

(2)

 ƒ  ½ ¨ 7 Hë  H  à ÔY U½ + ɖ ÐÝ ¼ ì  r  ? /_  / å J o  ïr × ¼   ½ + Ë    o\  @ /ô  Ç ƒ  ½ ¨ – " f& ñ   1 p x -163-

\

" f : £ ¤Z > y  / å J o  ïr × ¼   ½ + Ë\  › ' a d ” `  ¦ ”   s Ä »  H à Ô Y

U½ + ɖ ÐÝ ¼ ì  r   Ó ü t _   €  ^ ‰ ½ ¨› ¸  [ jŸ í} Œ •\    É r [ O 

„

½ Ó[ þ t ˜ Ð  ~ 1 >  g Ë >È Ò   H s Ä »\  ¦ à ÔY U½ + ɖ ÐÝ ¼ ì  r  _  / å J o

 ïr × ¼   ½ + Ë_  $ í | 9 `  ¦ ƒ  ½ ¨† < ÊÜ ¼– Ð+ ‹ s K  “ ¦  Ù þ ¡l  M

:ë  H s  .

II. ÷ m Ç ] M ö

‘

: r ƒ  ½ ¨\ " f  6   x ô  Ç à ÔY U½ + ɖ ÐÝ ¼ (trehalose)  H Cargill Company – РÒ'  ] j/ B N ~ à ΀ Œ ¤Ü ¼ 9, Z >   É r & ñ  oõ & ñ \ O s 



6   x % i  .  s ß ¼– Ð  𠏑 É r“ É r r « Ñ\  ¦ é ß –r ç ß –\  ç  H{ 9 

>  \ P    H X < Ä »o ô  Ç ~ ½ ÓZ O s l  M :ë  H \  à ÔY U½ + ɖ ÐÝ ¼_  Ä

»o  © œ`  ¦ ë ß –[ þ t l  0 A  9  s ß ¼– Ð  𠏑 É r`  ¦  6   x % i   [9]. à ÔY U½ + ɖ ÐÝ ¼ Ä »o  © œ“ É r X‚   í ß –ê ø Í z  ´+ « > (GDX-1193A, Japan)`  ¦ : Ÿ x # Œ S X ‰ “   % i  . à ÔY U½ + ɖ ÐÝ ¼ Ä »o _  Ä »o „   s

 “ : r • ¸ 8 £ ¤& ñ `  ¦ 0 A # Œ differential scanning calorimeter (DSC3100, Mac Science, Japan)\  ¦  6   x % i  . s  8 £ ¤& ñ

\

  6   x ô  Ç r « Ñ_  € ª œ“ É r 20 mg s  9,  Ø ÔŒ 4 H Û ¼ ì  r 0 Al 

\

" f · ú ˜À Òp ³ o u ! s q`  ¦  6   x # Œ 8 £ ¤& ñ % i  . à ÔY U½ + ɖ ÐÝ ¼ ì

 r  ? /_  / å J o  ïr × ¼   ½ + ˗ ¸× ¼\  ¦ 8 £ ¤& ñ l  0 AK " f Ra- man spectroscopy\  ¦  6   x % i Ü ¼ 9, F g " é ¶ Ü ¼– Ð 514.5 nm _

 Ar-ion Y Us $ \  ¦  6   x % i  .

III. + s ÇÊ Ý õ m Í ‚ ºÂ ] Ø



s ß ¼– Ð  𠏑 É r`  ¦ s 6   x # Œ ë ß –Ž  H à ÔY U½ + ɖ ÐÝ ¼_  Ä »o 



© œI \  ¦ S X ‰ “   l  0 A # Œ X‚   í ß –ê ø Í z  ´+ « >`  ¦ % i  . Fig.

1“ É r à ÔY U½ + ɖ ÐÝ ¼   & ñ õ  Ä »o  © œ_  X‚   í ß –ê ø Í z  ´+ « >   õ s 



. à ÔY U½ + ɖ ÐÝ ¼   & ñ  © œ\ " f  H # Œ Q > h_  i ” s  › ' a8 £ ¤ ÷ &% 3  Ü

¼ 9, Õ ª   õ   H   É r ƒ  ½ ¨  õ [ þ t õ  ¸ ú ˜ { 9 u  >    z Œ ¤



 [10–13]. à ÔY U½ + ɖ ÐÝ ¼ Ä »o  © œ\ " f  H 10 ∼ 20

  H % ƒ\ 

"

f [ O „ ½ Ó ì  r  ç ß –_  ¨ î ç  H  o \  _ K       H ¢ - a ë ß –ô  Ç V , 

“

É r i ” s  › ' a ¹ 1 Ï÷ &% 3  . s  Qô  Ç   õ   H Ä »o Ó ü t| 9 _  X‚   í ß – ê

ø Í z  ´+ « >\ " f      H „  + þ A& h s  ‰ & ³ © œs  9,   " f s     õ

– РÒ'  à ÔY U½ + ɖ ÐÝ ¼_  Ä »o  © œo  ¸ ú ˜ ë ß –[ þ t # Q & ’    H   z 

´`  ¦ S X ‰ “   ½ + É Ã º e ” % 3   [9].

à

ÔY U½ + ɖ ÐÝ ¼_  Ä »o „  s  “ : r • ¸  H DSC\  ¦ s 6   x # Œ 5 p x“ : r Ò

 ¦`  ¦    or v €  " f 8 £ ¤& ñ % i Ü ¼ 9, Õ ª   õ \  ¦ Fig. 2 \   

? /% 3  . à ÔY U½ + ɖ ÐÝ ¼_  Ä »o „  s  “ : r • ¸  H 2 ∼ 8

C/min 5

p

x“ : rÒ  ¦ \ " f 107.1 ∼ 110.3

C – Ð › ' a8 £ ¤ ÷ &% 3 Ü ¼ 9, \ P  t ƒ  

´

òõ \  _ K  5 p x“ : rÒ  ¦ s  7 £ x † < Ê\     Ä »o „  s  “ : r • ¸

7

£

x    H  ⠆ ¾ Ó`  ¦   ? /% 3  . à ÔY U½ + ɖ ÐÝ ¼_  Ä »o „  s  “ : r

•

¸  H · ú ¡‚   ƒ  ½ ¨\ " f › ' a8 £ ¤ ô  Ç # Œ Q t  [ O „ ½ Ó_  Ä »o „  s 

Fig. 1. X-ray diffraction spectra of trehalose glass and crystal.

Fig. 2. Glass transition temperatures of trehalose glass.

“

: r • ¸ [14] -20 ∼ 33

C “    כ `  ¦ “ ¦ 9K  ^  ¦ M :  © œ{ © œy  Z  }

“ É

r ° ú כs  . à ÔY U½ + ɖ ÐÝ ¼ s  Qô  Ç Z  }“ É r Ä »o „  s  “ : r • ¸\  ¦

t   H s Ä »  H  f ”  t  S X ‰ z  ´ >  µ 1 ß) €t “ ¦ e ” t   H · ú § t

ë ß –, ° ú  “ É r “ : r • ¸\ " f “ ¦ 9 % i `  ¦ M : Ä »o „  s  “ : r • ¸  8

± ú

“ É r   É r [ O „ ½ Ó Ó ü t| 9 [ þ t ˜ Ð  Z  }“ É r & h $ í `  ¦ t l  M :ë  H \ 



 É r [ O „ ½ Ó[ þ t \  q K  [ jŸ í˜ Ð  ñ 0 p x§ 4 s  8 A# Q  “ ¦ b ” # Q t

“ ¦ e ”   [15].

‘

: r ƒ  ½ ¨\ " f  H à ÔY U½ + ɖ ÐÝ ¼_  8 A# Qè ß – ˜ Р ñ: £ ¤$ í \  @ /ô  Ç

"

é

¶ “  `  ¦ ½ ©" î “ ¦  à ÔY U½ + ɖ ÐÝ ¼ ì  r  _  / å J o  ïr × ¼   ½ + Ë _

    o\  ¦ 1000 ∼ 1200 cm

−1

% ò % i \ " f 8 £ ¤& ñ % i Ü ¼ 9, Õ ª

 

õ \  ¦ Fig. 3 \    ? /% 3  . ‘ : r ƒ  ½ ¨\ " f  H 1140 cm

−1



 H % ƒ\ " f      H — ¸× ¼\  › ' a d ” `  ¦ t “ ¦ ì  r$ 3  % i  .

1140 cm

−1

  H % ƒ\ " f      H i ” “ É r C-O vibration, C-H bending, Õ ªo “ ¦ C-O-H vibration_    ½ + Ë\  _ K " f   



  H i ” Ü ¼– Ð / å J o  ïr × ¼   ½ + Ës   Ô  ¦ 2 ; . / å J o  ïr × ¼

 

½ + ˓ É r à ÔY U½ + ɖ ÐÝ ¼\  ¦ ½ ¨$ í “ ¦ e ”   H ¿ º > h_  / å J À ҝ ïÝ ¼ ì

 r    s \  ¦ ƒ       H   ½ + Ës  9,   " f / å J o  ïr × ¼   

(3)

-164- ô  Dz D GÓ ü t o † < Æ rt  “D hÓ ü t o ”, Volume 54, Number 3, 2007¸   3 Z 4

Fig. 3. Raman spectra of trehalose glass with increasing temperature.

½

+ Ë_     o\  ¦ ì  r$ 3 † < ÊÜ ¼– Ð+ ‹ à ÔY U½ + ɖ ÐÝ ¼ ì  r   ? /\ " f ¿ º

>

h_  / å J À ҝ ïÝ ¼ ç ß –_    ½ + Ë  © œI _     o\  ¦ Æ Ò8 £ ¤ ½ + É Ã º e ”  .

Fig. 3 \     · p Raman scattering   õ \  ¦ Lorentzian † < Ê Ã

º– Ð x h A % i Ü ¼ 9, x h A`  ¦ : Ÿ x # Œ ½ ¨ô  Ç “ : r • ¸7 £ x \  @ / ô

 Ç Raman i ” _  s 1 l x`  ¦ Fig. 4 \    ? /% 3  . Fig. 4\ 

"

f “ : r • ¸7 £ x \    É r Raman i ”     o_  l Ö  ¦ l  162

C

\

" f    % i Ü ¼ 9, s    õ – РÒ'  à ÔY U½ + ɖ ÐÝ ¼ Ä »o _  / å J o

 ïr × ¼   ½ + Ës  162

C \ " f    o l  r  Œ •ô  Ç   H  כ

`

 ¦ · ú ˜ à º e ” % 3  .

/ å

J o  ïr × ¼   ½ + Ë_     o\  @ /K  ¿ º t  0 p x ô  Ç  â Ä º

\

 ¦ “ ¦ 9K  ^  ¦ à º e ”   H X <, ô  Çt   H à ÔY U½ + ɖ ÐÝ ¼ ì  r  ? /\ 

"

f / å J À ҝ ïÝ ¼ ì  r  ç ß –_    ½ + ËU  ´s  U  ´# Qt   H  â Ä ºs “ ¦,



 É r ô  Ç t   â Ä º  H / å J À ҝ ïÝ ¼ ì  r  ç ß –_    ½ + Ë y Œ •s    



o   H  â Ä ºs  . ‘ : r ƒ  ½ ¨\ " f  H s  Qô  Ç à ÔY U½ + ɖ ÐÝ ¼\ 

"

f / å J o  ïr × ¼   ½ + Ë_     o\  ¦ ì  r$ 3 † < ÊÜ ¼– Ð+ ‹ Ó ü t _   €  

^

‰ ½ ¨› ¸  [ jŸ í} Œ •\  @ /ô  Ç à ÔY U½ + ɖ ÐÝ ¼_  g Ë >È ÒÖ  ¦ \  @ /ô  Ç s

K \  ¦ Z  } s “ ¦  % i Ü ¼ 9, Ï ã ÎF G& h Ü ¼– Ð à ÔY U½ + ɖ ÐÝ ¼_  ˜ Ð  

ñ: £ ¤$ í \  @ /ô  Ç s K \  • ¸¹ ¡ § s  | ¨ c  כ Ü ¼– Ð l @ /ô  Ç .

IV. + s Ç Â ] Ø

‘

: r ƒ  ½ ¨\ " f  H “ : r • ¸7 £ x \    É r à ÔY U½ + ɖ ÐÝ ¼ Ä »o _  / å J o

 ïr × ¼   ½ + Ë_     o\  ¦ Raman spectroscopy\  ¦ s 6   x 

#

Œ 8 £ ¤& ñ % i  . / å J À ҝ ïÝ ¼ ì  r  ç ß – ”  1 l x \  _ K  1140 cm

−1



 H % ƒ\ " f      H / å J o  ïr × ¼   ½ + Ë\  @ /ô  Ç Ramani ” `  ¦ ì

 r$ 3 ô  Ç   õ  “ : r • ¸7 £ x \    É r Raman i ”     o_  l Ö  ¦ l 

 162

C \ " f    % i  . s    õ – РÒ'  à ÔY U½ + ɖ ÐÝ ¼ Ä » o

_  / å J o  ïr × ¼   ½ + Ës  162

C \ " f    o l  r  Œ •ô  Ç

Fig. 4. Raman shift of glycosidic bond of trehalose with increasing temperature.



  H  כ `  ¦ · ú ˜ à º e ” % 3 Ü ¼ 9, s   â Ä º 0 p x ô  Ç / å J o  ïr × ¼

 

½ + Ë_     o  H / å J À ҝ ïÝ ¼ ì  r  ç ß –_    ½ + ËU  ´s  ¢ ¸  H   ½ + Ë y

Œ

•_     o{ 9   כ s   Æ Ò8 £ ¤ ) a  .

P

c p 8 ý ò k >

‘

: r ƒ  ½ ¨  H  Òí ß –@ /† < Ɠ §  Ä »õ ] j † < ÆÕ ü tƒ  ½ ¨q  (2¸  )\  _

 # Œ ƒ  ½ ¨÷ &% 3 6 £ §.

Y

c p w Š à U Ø ”  ô

[1] M. Karel and Labuza, J. Agriculture and Food Chemistry 16, 717 (1968).

[2] T. Schoebel, S. Tannenbaum and Labuza, J. Food Sci. 34, 324 (1969).

[3] Flink, J. Food Sci. 48 539 (1983).

[4] C. Brancaa, S. Magazu, G. Maisanoa, P. Migliar- doa and E. Tettamantib, J.Mol.Sci. 480-481, 133 (1999).

[5] A. Vegis, Annu. Rev. Plant Physiol. 15, 185 (1964).

[6] A. S. Sussman and H. O. Halvorson, in: Spores:

Their Dormancy and Germination (Harper & Row, New York, 1966)

[7] J. S. Clegg, Comp. Biochem. Physiol. 20, 8 (1967).

[8] Natasa Jovanovic, Andreanne Bouchardb, Gerard

W. Hofland, Geert-Jan Witkamp, Daan J. A. Crom-

melin and Wim Jiskoot, European Journal of Phar-

maceutical Sciences 27, 336 (2006).

(4)

 ƒ  ½ ¨ 7 Hë  H  à ÔY U½ + ɖ ÐÝ ¼ ì  r  ? /_  / å J o  ïr × ¼   ½ + Ë    o\  @ /ô  Ç ƒ  ½ ¨ – " f& ñ   1 p x -165-

[9] Jeong-Ah Seo, Jiyoung Oh, Dong Jin Kim, Hyung Kook Kim and Yoon-Hwae Hwang, Journal of Non- Crystalline Solids 333, 111 (2004).

[10] Joint Committee for Powder Diffraction Standards, Powder Diffraction File (Institute of Physics, Uni- versity College, Cardiff, Wales, ICDD Grant-in-Aid) Nos. 03-0312.

[11] F. Sussich, S. Bortoluzzi and A. Cesaro, Ther- mochem. Acta 391, 137 (2002).

[12] F. Sussich, F. Princivalle and A. Cesaro, Carbohy-

drate Res. 322 133 (1999).

[13] H. Nagase, T. Endo, H. Ueda and M. Nakagaki, Car- bohydrate Res. 337, 167 (2002).

[14] Su Jae Kim, Chung Sik Kim, Jiyoung Oh, Jung-A Suh, Yong Suk Yang, Hyung Kook Kim and Yoon- Hwae Hwang, SEAMULLI (New Phys.) 44, 252 (2002).

[15] J. L. Green and C. A. Angell, Journal of Physical Chemistry 93 2880 (1989).

Glycosidic Bond Change in Trehalose Glass

Jeong-Ah Seo

Department of Physics, Pusan National University, Busan 609-735

Hyun-Joung Kwon and Hyung Kook Kim

Department of Nanofusion Technology, Pusan National University, Miryang 627-706

Hee Mi Lee

School of Nanoscience and Technology, Pusan National University, Miryang 627-706

Yoon-Hwae Hwang

Department of Nanomaterials, Pusan National University, Miryang 627-706 (Received 24 January 2007)

We studied the glycosidic bond in trehalose glass to understand the bioprotect mechanism. We measured the glycosidic bond vibration mode around 1140 cm

−1

with increasing temperature from 50

C to 210

C by using Raman spectroscopy, and we found that the slope of the Raman shift changed at 162

C. From this result, we can speculate that the glycosidic bond in trehalose glass changed around 162

C and that the change might originate from the change in the bond length of the bond angle between the glucose rings in trehalose glass.

PACS numbers: 07.20.Fw, 61.10.Eq, 61.43.Fs, 78.30.Ly Keywords: Glass, Trehalose, Glycosidic link, Raman scattering

E-mail: [email protected]

수치

Fig. 2. Glass transition temperatures of trehalose glass.
Fig. 3. Raman spectra of trehalose glass with increasing temperature.

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