Amines Amino acids Bioactive compounds Biological systems Carbohydrate content Carbohydrates Direct analysis Direct profiling Electrospray ionization Electrospray ionization mass spectrometry Electrosprays Flower buds In-vivo Ionization Mass spectrometers Mass spectrometry Metabolic changes Organic acids Particle detectors Phytochemicals Plant Roots Probes Sample consumption Sample preparation Spectrometry, Mass, Electrospray Ionization Time-of-flight mass spectrometers Transducers Tulipa Vegetation amino acid