Chemical Analysis of Commercial White Wines and Its Relationship with Consumer Acceptability

White wine consists of numerous chemical constituents such as volatile and nonvolatile compounds including organic acids and polyphenols, which can affect aroma and flavor profiles. In addition to the enological factors, chemical analysis of commercial wines is also important for understanding consumer perception. Volatile compounds are major contributors to wine aroma. Nonvolatile compounds affect the flavor of wine, through acidity, sweetness, bitterness, and astringency. The volatile aroma profiles of 12 commercial white wines were analyzed using headspace solid-phase microextraction (HS-SPME), with gas chromatography–mass spectrometry (GC–MS). High-performance liquid chromatography (HPLC) and a Y15 automatic analyzer were used to identify and quantify 10 polyphenols and 12 other target nonvolatile compounds. Sensory evaluation of sample wines was conducted by wine consumers. White wines were distinguished based on volatile and nonvolatile compositions. A total of 33 volatile compounds and 23 nonvolatile compounds were analyzed. Seven volatile compounds were correlated with consumer acceptability. Sugars are positively correlated with consumer preference, while nonvolatile substances such as acetic acid and catechins are negatively correlated with consumer preference. These results might further our understanding of the relationship between the chemical composition and consumer preferences in commercial wines

Antioxidant Effects of Myo-Inositol Improve the Function and Fertility of Cryopreserved Boar Semen

During cryopreservation, sperm undergoes structural and molecular changes such as ice crystal formation, DNA fragmentation, and reactive oxygen species (ROS) production, leading to decreased sperm quality after thawing. Antioxidants play a crucial role in preventing these damages, both in vivo and in vitro. One potent antioxidant is myo-inositol, known for its protective effects on sperm against ROS. This study aimed to investigate the protective effect of myo-inositol on cryopreserved boar semen. The semen was diluted, cooled, and cryopreserved using a BF5 extender. It was then divided into five groups: control and different concentrations of myo-inositol (0.5, 1, 1.5, and 2 mg/mL). The post-thaw evaluation included assessments of motility, viability, acrosome integrity, mitochondrial membrane potential (MMP), caspase activity, gene expression, ROS levels, apoptosis, and IVF with treated semen. Results showed that myo-inositol at 0.5 mg/mL improved motility, acrosome integrity, and fertilization ability. It also reduced the expression of pro-apoptotic genes and increased SMCP expression. Lower concentrations also demonstrated improved viability and reduced apoptosis and ROS levels. In conclusion, myo-inositol treatment during cryopreservation improved sperm quality, reduced apoptosis and ROS levels, and enhanced fertility rates in boar semen

A new approach to the restoration of seaweed beds using Sargassum fulvellum

Seaweed beds are productive marine ecosystems; they provide habitat and serve as spawning, breeding, and feeding sites for fish and shellfish. Seaweed beds are declining with environmental change and pollution. In affected areas, including “urchin barrens” and those affected by “whitening events,” coralline algae appear, preventing the attachment of seaweed spores to the substrate. Many methods have been used to restore seaweed beds, such as those employing artificial reefs, seaweed ropes, spore bags, and transplanted cultures. However, such efforts are insufficient to overcome the disappearance of seaweed beds from coastal areas. This study examined the use of a new technique that involves encapsulating seaweed zygotes with polysaccharide-like alginates to improve their attachment using the brown alga Sargassum fulvellum, which plays an important role in seaweed forests. We tested the efficacy of encapsulated zygotes using polyvinyl chloride (PVC) panels and concrete bricks in the sea. In the laboratory, the germination percentage of encapsulated Sargassum zygotes was 70% ± 1.6%, similar to the rate of unencapsulated zygotes. In the field experiment, PVC panels and concrete bricks were coated with encapsulated and unencapsulated zygotes; the germination density and growth rates of encapsulated zygotes were 4 (p < 0.001) and 7 times (p < 0.016) greater, respectively, than those of unencapsulated zygotes. The germination density and growth rate of encapsulated zygotes on concrete bricks were also greater. Therefore, encapsulation should increase the attachment of seaweed spores in marine environments.11Nsciescopu