Purpose The purpose of this paper is to understand the process that leads to the revisit intentions of young domestic travellers to Penang for its multi-ethnic street food based on the ABC model of attitudes and the theory of consumption values. Design/methodology/approach Data were collected online from 305 local Generation Y and Z travellers via a purposive sampling method and analysed using SmartPLS v.3.2.6. Findings Taste value had the most salient effect on attitude towards Penang street food followed by emotional value. The impact of attitude on the intention to revisit Penang for its street food is mediated by place attachment. Practical implications Apart from ensuring the authentic taste of multi-ethnic street food is preserved, campaigns crafted to boost street food tourism should communicate how eating street food can manifest in feelings of enjoyment, pleasure and excitement to the young travellers as well as highlight the identity of the place as an incomparable street food destination. Originality/value This study demonstrates that continuous revisits to a destination for street food is affective-driven with the significant role of place attachment as a mediator and the intangible force of emotional value (apart from taste value) influencing attitude towards street food.

The composition of the essential oil of rhizomes of Kuempferiu galanga L. growing in Malaysia has been investigated by capillary GC, GC-MS and 'H-NMR. The oil contained 54 components, of which the major constituents were ethyl trans-pmethoxycinnamate (51.6%), ethyl cinnamate (16.5 %). pentadecane (9.0%), 1,8-cineole (5.7 %), 6-car-3-ene (3.3%) and borneol (2.7 %). Terpenoid constituents amounted to 16.4%.

The reaction of methyl 2-0-acetyl-4,6-O-benzylidene-3-deoxy-3-nitro-~-~-glucopyranoside (1) or of methyl 4,6-0-benzylidene-2,3-dideoxy-3-nitro-~ro-hex-2-enopyranoside (2) with nitroalkanes led to branched-chain dinitro sugar derivatives, namely methyl 4,6-0-benzylidene-2,3-dideoxy-3-nitro-2-nitroalkyl-0-D-glucopyranosides (3). The nitroalkanes employed included nitromethane, nitroethane, 1-and 2-nitropropane, and methyl nitroacetate. The three first-mentioned nitroalkanes were added in similar fashion to methyl 4,6-0-benzylidene-2,3-dideoxy-3-nitro-~-~-threo-hex-2-enopyranoside (5) to give methyl 4,6-0-benzylidene-2,3-dideoxy-3-nitro-2-nitroalky--~-galactopyranosides (6). Analogous reactions of 1 and 5 with diethyl malonate produced the corresponding branched-chain glycosides 7 and 8.The reactions appear to be highly stereoselective as far as the configurations at C-2 and C-3 in the products are concerned. However, there is evidence for the formation of side-chain epimers in three cases where the nitroalkyl side chain possesses an asynlmetric carbon.

The rearrangement which took place in the preparation of 2 is known."6The dibromide 2, on treatment with triethyl phosphite, gave the phosphonate 3 in 70% yield based on the Czcr diol. Selective reduction of 3 with Lindlar catalyst' resulted in retinyl phosphonate (4). The nmr spectra and the analytical data of 2 4 were compatible with the assigned structures.The phosphonate 4 and vitamin A aldehyde 5 were stirred with sodium methoxide in pyridine at 0 ' to yield 0-carotene. The reduction of an ethynyl function with Lindlar catalyst leads to the cis configuration.

Umsetzung der 5‐O‐Benzyl‐1,2‐O‐isopropyliden‐α‐D‐erythro‐pentafranos‐3‐ulose (I) mit einem Überschuß an Nitromethan und Natriummethylat in Methanol (16 Stdn. bei Raumtemperatur) ergibt 5‐O‐Benzyl‐1,2‐O‐isopropyliden‐3‐C‐nitromethyl‐α‐D‐ribofuranose (II) (60% Ausbeute), analoge Umsetzung der 1,2:5,6‐Di‐O‐isopropyliden‐α‐D‐ribo‐hexofuranos‐3‐ulose (III) die 3‐C‐Nitromethyl‐Verbindung (IV) (71% Ausbeute).