Journal of Food Composition and Analysis 30 ( 2013 ) i

Volume 30 , Issue 1 , 2013

Effects of (�)-cubebin (Piper cubeba) on cytotoxicity, mutagenicity and expression of p38 MAP kinase and GSTa2 in a hepatoma cell lineAndressa Megumi Niwa, Juliana Cristina Marcarini, Daniele Sartori, Edson Luis Maistro and Mário Sérgio Mantovani 1

Total phenolic, total anthocyanin and phenolic acid concentrations and antioxidant activity of purple-fleshed potatoes as affected by boilingGabriela Burgos, Walter Amoros, Lupita Muñoa, Paola Sosa, Edith Cayhualla, Cinthia Sanchez, Carlos Díaz and Merideth Bonierbale 6

Comparative analysis of antioxidant activity of honey of different floral sources using recently developed polarographic and various spectrophotometric assaysStanislava Ž. Gorjanovic , José Miguel Alvarez-Suarez, Miroslav M. Novakovic , Ferenc T. Pastor, Lato Pezo, Maurizio Battino and Desanka Ž. Sužnjevic 13

Elemental characterization of Brazilian canned tuna fish using particle induced X-ray emission (PIXE)Liana Appel Boufleur, Carla Eliete Iochims dos Santos, Rafaela Debastiani, Maria Lúcia Yoneama, Lívio Amaral and Johnny Ferraz Dias 19

Physicochemical and quality characteristics of cold-pressed hemp, flax and canola seed oilsSue-Siang Teh and John Birch 26

Phenolic profile characterization of pomegranate (Punica granatum) juice by high-performance liquid chromatography with diode array detection coupled to an electrospray ion trap mass analyzerEnrique Sentandreu, Manuela Cerdán-Calero and José M. Sendra 32

Composition of Cissus populnea stemK.O. Adebowale, L.M. Nwokocha and W.B. Agbaje 41

Development of a simple analytical method using capillary electrophoresis-tandem mass spectrometry for product identification and simultaneous determination of free amino acids in dietary supplements containing royal jellyShigeki Akamatsu and Takao Mitsuhashi 47

Diterpenes in green and roasted coffee of Coffea arabica cultivars growing in the same edapho-climatic conditionsCíntia Sorane Good Kitzberger, Maria Brígida dos Santos Scholz, Luiz Filipe Protasio Pereira, Luiz Gonzaga Esteves Vieira, Tumoru Sera, João Batista Gonçalves Dias Silva and Marta de Toledo Benassi 52

Contents

doi:10.1016/S0889-1575(13)00028-8

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Journal of Food Composition and Analysis

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