Impact of Long-Term Cold Storage on the Physicochemical Properties, Volatile Composition, and Sensory Attributes of Dried Jujube ( Mill.).

Grey jujube ( Mill. cv. Huizao), a prominent cultivar from Xinjiang, China, is well known for its high nutritional value and medicinal benefits.

Rapid determination of beta-agonists in pig urine using surface-enhanced Raman spectroscopy.

Beta-agonists are a class of drugs for treating asthma, which are often illegally used as additives in livestock breeding, causing muscle trembling, panic, headache, and other distressing symptoms. Here, we developed a rapid and non-destructive surface-enhanced Raman spectroscopy (SERS) method for the detection of beta-agonists in pig urine. The common characteristics of beta-agonists in Raman spectra were summarized.

Profiling the Major Aroma-Active Compounds of Microwave-Dried Jujube Slices through Molecular Sensory Science Approaches.

To discriminate the aroma-active compounds in dried jujube slices through microwave-dried treatments and understand their sensory attributes, odor activity value (OAV) and detection frequency analysis (DFA) combined with sensory analysis and analyzed through partial least squares regression analysis (PLSR) were used collaboratively. A total of 21 major aromatic active compounds were identified, among which 4-hexanolide, 4-cyclopentene-1,3-dione, 5-methyl-2(5H)-furanone, 4-hydroxy-2,5-dimethyl-3(2H)furanone, 3,5-dihydroxy-2-methyl-4-pyrone were first confirmed as aromatic compounds of jujube. Sensory evaluation revealed that the major characteristic aromas of dried jujube slices were caramel flavor, roasted sweet flavor, and bitter and burnt flavors.