( He ( also ( ( showed ( that ( cyclodextrin ( can ( be ( used ( to ( ( investigate ( catalysis ( of ( organic reactions ) ) ) ) ( within ( ( the scope ) ( of ( host-guest chemistry ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP He)) (ADVP (RB also)) (VP (VBD showed) (SBAR (IN that) (S (NP (NN cyclodextrin)) (VP (MD can) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB investigate) (NP (NP (NNS catalysis)) (PP (IN of) (NP (JJ organic) (NNS reactions)))) (PP (IN within) (NP (NP (DT the) (NN scope)) (PP (IN of) (NP (JJ host-guest) (NN chemistry)))))))))))))) (. .)))
He also showed that cyclodextrin can be used to investigate catalysis of organic reactions within the scope of host-guest chemistry.
(ROOT (S (PP (RB Instead) (IN of) (NP (NN heat))) (, ,) (NP (NNS organisms)) (VP (VBP use) (S (NP (NNS catalysis)) (VP (TO to) (VP (VB speed) (PRT (RP up)) (NP (NNS reactions)))))) (. .)))
Instead of heat, organisms use catalysis to speed up reactions.