Publications by authors named "Abdulrahman Saleh Al-Khalifa"
Juices of edible fruits from Opuntia ficus-indica (L.) Miller, commonly named prickly pears or Indian figs, were analysed for amino acids using an automated amino acid analyser run in the high-resolution physiological mode. Emphasis was put on the detection of free taurine (Tau), but Tau could be detected neither in different cultivars of prickly pears from Italy, South Africa and the Near East nor in commercially available prickly pear juices from the market.
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- The study explores the presence of non-proteinogenic amino acids (AAs) in the edible fruits of the date palm (Phoenix dactylifera L.), highlighting the lack of prior research in this area compared to common proteinogenic AAs.
- Twelve cultivars of date fruits were analyzed using advanced techniques like automated ion-exchange chromatography and GC-MS, revealing the presence of several non-proteinogenic AAs in varying amounts, such as 5-hydroxypipecolic acid and 1-aminocyclopropane-1-carboxylic acid.
- The research also includes enantiomeric analysis, finding very low levels of D-amino acids relative to their L-counterparts, and discusses the