This study evaluated the antioxidant and angiotensin-I converting enzyme (ACE) inhibitory activities of processed Cheddar cheese fortified with cloves, cumin, or black pepper during 0-9 months of storage. Freeze-dried ethanol-soluble extracts (ESE) and water-soluble extracts (WSE) collected during ripening were also examined. The WSE of black-pepper cheese showed the strongest antioxidant activity, with higher DPPH radical scavenging ability (1516.4 +/- 180 & micro;mol Trolox equivalent/g) and reducing power (38.12 +/- 0.38 & micro;g/g), along with the highest total phenolics (82.48 +/- 3.2 & micro;g GAE/g). After simulated gastrointestinal digestion, the antioxidant properties significantly increased in all the treatments. Digested black-pepper cheese exhibited the highest total antioxidant activity (5752.8 +/- 83.3 & micro;g Trolox equivalent/g), while control cheese showed the lowest (4603.3 +/- 86.2 & micro;g Trolox equivalent/g). Overall, digested spiced cheeses showed superior antioxidant and ACE-inhibitory activities compared to their corresponding freeze-dried extracts. Results highlight digestion-released bioactive compounds and support spiced Cheddar cheeses as promising functional dairy products.

Mitigating climate change can be achieved by opting for sustainable, plant-based materials instead of relying on hazardous chemicals that come with various side effects. Various natural plant extracts find widespread application in synthesizing insect-repellent coatings, particularly in industries such as paint manufacturing. The increasing demand for these coatings has led us to find out the effects of different plant extracts for the efficient preparation of paints with more advanced impacts and low cost. For this purpose, zinc nanoparticles of Eucalyptus globulus L. and its extracts were used in this study due to their remarkable biocidal and antimicrobial activities. The extract was prepared by the process of oven-drying and heating followed by their filtration. Then, they were subjected to different phytochemical tests that were performed in which plant material did not contain flavonoids and glycol. The comparison of the size of nanoparticles was visible during the weighing which was found to be 4.451 mg. Advanced characterization techniques like FTIR, UV visible spectroscopy, and particle size analysis were adopted for the analysis of nanoparticles of plant extract. The FTIR analysis of the plant material was reported to lie in the range of 1000–1800 cm−1. On the other hand, the results of UV visible spectroscopy of nanoparticles of plant extract showed absorption peaks around 300 nm. The produced material was integrated into paint formulations to impart insect-repellent and antibacterial characteristics. Painted panels exhibited notable antibacterial efficacy, presenting an inhibition zone of 0.7 cm for Escherichia coli and 0.3 cm for Staphylococcus aureus when utilizing biocide. Plant nanoparticles yielded inhibition zones of 1 and 1.2, while aqueous extract resulted in zones of 0.2 and 0.5, respectively. A thorough evaluation of the paint's color attributes, including ΔL, Δa, Δb, and ΔE, indicated noteworthy differences. The CMC ΔE values from the trials exceeded 1, indicating a substantial change in shade. The batches of paints containing E. globulus extracts and nanoparticles were found to be lighter in color specifically green and yellow colors. Their antimicrobial and insect repellant activity was tested using the mosquitos of Aedes aegypti with an age of 4–5 weeks, revealing that formulations with plant extracts exhibited a 61 % effective period, greater than the 7 % observed in non-biocidal formulations. The paint responded best towards these mosquitoes in terms of repellency and the ultimate target of this study was achieved.

Gynostemma pentaphyllum belongs to the family Cucurbitaceae which is native to China where it is also termed an immortal herb. It is an emerging herb gaining fame for its rich phytochemistry. It is loaded with superior phytochemicals with immense therapeutic potential. The key phytochemicals include saponins and sterols. Saponins are a wide class of bioactive found in Gynostemma pentaphyllum and 100 different saponins have been reported to date by different researchers in this herb. Several sterols have been demonstrated in this plant including ergostanol, sitosterol and stigmasterol. All these bioactive substances possess superior therapeutic and pharmacological properties that have been investigated in different studies as presented in this comprehensive review. Taxonomic classification, botanical description, and geographical distribution are briefly covered in the first section of this review. In contrast, the phytochemistry, therapeutic properties, and pharmacological features of Gynostemma pentaphyllum are thoroughly explained in the second section.

Carotenes are fat-soluble pigments found in a variety of foods, the majority of which are fruits and vegetables. They may have antioxidant biological properties due to their chemical makeup and relationship to cellular membranes. And over 700 carotenoids have been found, with—carotene, lutein, lycopene, and zeaxanthin is the most significant antioxidant food pigments. Their capacity to absorb lipid peroxides, reactive oxygen species (ROS) and nitrous oxide is likely linked to their anti-oxidative properties (NO). The daily requirements for carotenoids are also discussed in this chapter. Heart disease is still a prominent source of sickness and mortality in modern societies. Natural antioxidants contained in fruits and vegetables, such as lycopene, a-carotene, and B-carotene, may help prevent CVD by reducing oxidative stress, which is a major factor in the disease’s progression. Numerous epidemiological studies have backed up the idea that antioxidants might be utilized to prevent and perhaps treat cardiovascular illnesses at a low cost. Supplements containing carotenoids are also available, and their effectiveness has been proven. This article provides an overview of carotenoids’ chemistry, including uptake, transport, availability, metabolism, and antioxidant activity, including its involvement with disease prevention, notably cardiovascular disease.