Sun, Ruixue published the artcileAuthentication and quality evaluation of not from concentrate and from concentrate orange juice by HS-SPME-GC-MS coupled with chemometrics, Category: esters-buliding-blocks, the main research area is orange juice chemometrics headspace solid phase microextraction GC MS.
Substituting of not from concentrate (NFC) orange juice with from concentrate (FC) orange juice is a novel adulteration problem. This study used headspace solid-phase microextraction-gas chromatog.-mass spectrometry coupled with chemometrics to discriminate between NFC and FC orange juices. Twenty-five compounds were identified as differential compounds for NFC and FC orange juice discrimination. During processing, concentration treatment is a key step for forming differential compounds After the treatment, 25 differential compounds decreased significantly. Among, trans-isopiperitenol (5.45 ± 0.79μg/L), Et butanoate (106.5 ± 7.24μg/L), Bu butanoate (3.60 ± 0.19μg/L), hexyl butanoate (2.82 ± 0.14μg/L), Et octanoate (5.04 ± 0.39μg/L), 1,3,8-p-menthatriene (4.97 ± 0.49μg/L), p-mentha-1,5,8-triene (4.82 ± 0.59μg/L), and limona ketone (5.00 ± 0.53μg/L) declined until they were undetectable. These 25 differential compounds can discriminate NFC and FC orange juices processed by thermal concentration and other sterilization methods. Based on the 25 differential compounds, a partial least squares discriminant anal. model was constructed to identify com. samples. 100% NFC and 86.67% FC com. orange juices were consistent with their labels. These results clarify the volatile differences in volatile compounds and their causes for NFC and FC orange juices and provide references for juice quality control.
LWT–Food Science and Technology published new progress about Chemometrics. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics