Prasongsuk, S., M.A. Berhow, C.A. Dunlap, D. Weisleder, T.D. Leathers, D.E. Eveleigh and H. Punnapayak (2007).
     Pullulans production by tropical isolates of Aureobasidium pullulans, Journal of Industrial Microbiology and
     Biotechnology,34, 55-61.

Punnapayak, H., M. Kuhirun and T. Watanabe (2005). Liquid state prebleaching of paper pulp with white rot fungi.
     Journal of National Research Council of Thailand, 37,1, 25-35.

Prasongsuk, S., R.F. Sullivan, M. Kuhirun, D.E Eveleigh and H. Punnapayak (2005). Thailand habitats as sources of
     pullulan producing strains of Aureobasidium pullulans. World Journal of Microbiology and Biotechnology, 21,
     393-398.

Punnapayak,H., M. Sudhadam, S. Prasongsuk and S. Pichayargkura (2003). Characterization of Aureobasidium pullulans
     isolated from airborne spores in Thailand. Journal of Industrial Microbiology and Biotechnology, 30,2, 89-94.

Punnapayak, H.,and  K.Danmek (2003). Fungi isolated from banana – fruit stalks for the production of endoglucanase. In
     Ohmiya,K., et al.(eds). Biotechnology of Linocellulose Degradation and Biomass Utilization. Uni Publishers.
     Co.,Ltd.,Tokyo. Japan, 543-549.

Punnapayak, H., J. Pechwang, N. Chaichit, N.Jaiboon, S. Pornpakakul and A. Petsom (2002). Crystal structure of ent-
     (7b,11a) –dihydroxy-1-oxo-kaur-16-en-19-oic acid, C20H28O5. Z. Kristallogr. NCS., 217, 603-604.

Sae-be, P., U. Sangwatanoroj and H. Punnapayak. Analyses of Enzymatic Cotton Scouring Products. (accepted for
      publication in Journal of Biotechnology)

Punnapayak, H., J. Pechwang, N. Chaichit, N.Jaiboon, S. Pornpakakul and A. Petsom. (2002). Crystal structure of ent-
     (7b,11a) –dihydroxy-1-oxo-kaur-16-en-19-oic acid, C20H28O5, Z. Kristallogr. NCS, 217, 603-604.

Punnapayak,H., M.Kuhirun,and P.Thanonkeo(1999). Cellulolytic fungi and the bioconversion of fiber from Agave sisalina.
     Science Asia, 25, 133-136.

Punnapayak, H., M. Kuhirun, P. Thanonkhaew, and  P. Lamaipis (1999). Cellulolytic enzymes  from  Acrophialophora sp.
     In K.Ohmiya et al. (eds) Genetics. Biochemistry  and  Ecology  of  Cellulose  Degradation. Tokyo, Japan: UNI
     Publisher, pp 164-172.

Punnapayak, H. and  J.J. Hoffmann. (1994). Amsonia spp. As potential  fuel  crops  for  arid  lands. World  J.  of
     Microbiol. Biotech., 10, 290-292. Virabalin, R., B. Kositsub, and H. Punnapayak (1993). Leaf  protein
     concentratrate  from water  hyacinth. J. Aquat. Plant Manage, 31, 207-209.

Punnapayak,H.,M. Nudasomboon,and  S. Premjet (1991). Simultaneous  saccharification  and  fermentation  of  Agave
     sisalana, Microbial  Utilization  of  Renewable  Resources ( Japan ), 7, 446-448.

Punnapayak, H., P. Ratanapimarn,  and  S. Triratana (1991). Growth  of  Ganoderma  lucidum  in  liquid  culture.
     Microbial Utilization  of  Renewable  Resources  ( Japan ), 7, 301-304. Hoffmann, J.J., H. Punnapayak. S.D. Jolad,
     R. Bates, and  F.A. Camou (1988). Bioconversion of  grindelic  acid  into  3-b-hydroxygridelic  acid. J. Nat. Products
     ,51, 125-128.

Punnapayak, H.  and  G.H. Emert. (1986).Use  of  Pachysolen  tannophillus  in  the  simultaneous saccharification  and
    fermentation  (SSF)  of  lignocellulosics. Biotechnol. ett., 8, 63-66.