Effects of processing on the chemical, physicochemical, enzymatic, and volatile metabolic composition of pitaya (Hylocereus polyrhizus (F.A.C. Weber) Britton & Rose) was written by Santos, Glauber Batista Moreira;Dionisio, Ana Paula;Magalhaes, Hilton Cesar Rodrigues;Pinto de Abreu, Fernando Antonio;Lira, Sandra Machado;Viana de Lima, Ana Carolina;Silvestre da Silva, Gisele;Guedes, Jhonyson Arruda Carvalho;Araujo, Idila Maria da Silva;Artur, Adriana Guirado;Pontes, Dorasilvia Ferreira;Zocolo, Guilherme Juliao. And the article was included in Food Research International in 2020.Formula: C8H16O2 The following contents are mentioned in the article:
The effects of processing on the chem., physicochem., enzymic, and volatile metabolic composition of pitaya pulp were assessed for the first time. To this end, the following treatments to obtain pitaya pulp were evaluated: Treatment A (TA, pulp processing without ascorbic acid), Treatment B (TB, whole fruit processing with ascorbic acid), and Control (whole fruit processing without ascorbic acid). The treatment employed in TB resulted in low polyphenol oxidase and peroxidase activity, and no significant chem. or physicochem. alterations in most parameters evaluated. In addition, TB presents high yields and fiber content compared to the TA or Control. For metabolic anal., Gas Chromatog.-Mass Spectrometry (GC-MS) was effective for the simultaneous determination of 80 volatile metabolites in pitaya. Chemometric analyses was used to efficiently distinguish the volatile compounds of each treatment, and demonstrated that TB presents an interesting volatile profile due the conservation or agregation of compounds This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Formula: C8H16O2).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C8H16O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics