2831 20160701171711.0 ASTROimport-988 van Hoof, P. A. M. 2011 Herschel spectroscopy of planetary nebulae Within the context of our Herschel guaranteed time key program Mass-loss of Evolved StarS (MESS) we have obtained PACS and SPIRE spectra of several bright planetary nebulae, including NGC 7027 and NGC 6302. We have detected a range of molecular lines from the PDRs around these objects. The analysis of the spectra is still ongoing. In my talk I will present first results from our analysis, including modeling results using the photoionization / PDR code Cloudy. Barlow, M. J. Exter, K. M. Wesson, R. van de Steene, G. C. Groenewegen, M. A. T. The Molecular Universe 280 2011 367 http://esoads.eso.org/abs/2011IAUS..280P.367V published in NONREF