Volatile components of coconut fresh sap, sap syrup and coconut sugar were analyzed using GC-MS and identified by matching the mass spectra obtained with those present in the “NIST62 LIB” Library. The most abundant volatile components in the fresh sap, sap syrup and coconut sugar were 2-butanol and acetic acid. Twelve volatile components were identified and there were different amounts of volat...

Olfaction is a versatile and sensitive mechanism for detecting volatile odorants. We show that the nematode C. elegans detects many volatile chemicals, which can be attractants, repellents, or attractants at low concentrations and repellents at high concentrations. Through laser ablation, we have identified chemosensory neurons that detect volatile odorants. Chemotaxis to volatile odorants requ...

Phenotypic analysis of the daf-11 and daf-21 mutants of Caenorhabditis elegans suggests that they have defects in components shared by processes analogous to vertebrate taste and olfaction. daf-11 and daf-21 mutations were previously shown to cause inappropriate response to the dauer-inducing pheromone. By mutational analysis and by disabling specific chemosensory sensilla with a laser, we show...

Volatile compounds play a key role in the formation of the well-recognized and widely appreciated raspberry aroma. Studies on the isolation and identification of volatile compounds in raspberry fruit (Rubus idaeus L.) are reviewed with a focus on aroma-related compounds. A table is drawn up containing a comprehensive list of the volatile compounds identified so far in raspberry along with main ...

aqueous extract and volatile oil were obtained from miliusa tomentosa by using soxhlet extractor and hydro distillation with a clevenger-type apparatus respectively. the extract and volatile oil both were screened for antimicrobial activity against different bacteria (escherichia coli, staphylococcus aureus, bacillus subtilis, klebsiella pncumoniae, pseudomonas aeruginosa, bacillus pumilis) and...

Essential oils (EOs) are mixtures of secondary metabolites of plant origin with many useful properties, among which the antimicrobial activity is also of interest for the food industry. EOs can exert their antimicrobial potential both directly, in food products and active packaging, and indirectly, as sanitizing and anti-biofilm agents of food facility surfaces. Aim of this research was to eval...

objective: different cryoprotectants are used for cryopreservation of ovarian tissue in patients at risk of infertility. ethylene glycol (eg), dimethyl sulfoxide (dmso) and propanediol (proh) have been chosen as the basic permeable cryoprotectants due to their decreased glass-formation characteristics compared to other cryoprotectants. in the present study, the effects of two different vitrific...

Accurate mass measurements are used to both confirm the presence of a compound and help identify unknowns. Furthermore, high-mass accuracy enables the user to generate very narrow extracted ion chromatograms, enabling excellent quantitation. This application note describes the use of the Agilent liquid chromatograph/ mass selective detector time-of-flight (LC/MSD TOF) instrument to identify and...