483-76-1 | Page 2 of 10 | Heterocyclic Building Blocks-Benzoxazole

Tao, Rui’s team published research in LWT–Food Science and Technology in 2022-11-01 | CAS: 483-76-1

Physicochemical, nutritional, and phytochemical profile changes of fermented citrus puree from enzymatically hydrolyzed whole fruit under cold storage. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

1. Trivial name: delta-Cadinene.
2. It’s mainly derived from flue-cured tobacco, burley tobacco and flavoured tobacco, it has a strong aroma and a good fixing effect, suitable for perfume, cosmetics, can also be used in wine, cigarettes, and toothpaste.
. Recommended Products is: 29350-73-0 and 51905-84-1.

This study aimed to investigate the microbial viability, edible qualities, and flavor volatiles of enzymically hydrolyzed ‘Orah’ (Citrus reticulata Blanco) puree seperately using Lactobacillus paracasei JLPF-176 (LP) and Bifidobacterium infantis JYBI-373 (BI) as starters during fermentation and storage. The results showed that fermented enzymically hydrolyzed citrus puree contains sufficient viable counts (6-8 log CFU/mL) during fermentation and storage. Probiotics fermentaion increased the content of organic acids, total phenolic content (TPC), total flavonoid content (TFC), antioxidant capacities, and flavanones. Storage led to an increase in soluble sugars (fructose and glucose) and a decrease in organic acid (L-tartaric acid). During the early storage weeks, the TPC, polymethoxylated flavones (PMFs), and flavanones of citrus puree fermented by LP were obviously increased, resulting in higher antioxidant capacity based on the DPPH and FRAP methods. Correspondingly, the antioxidant capacity (ABTS and FRAP) of citrus puree fermented by BI was decreased continuously during storage, which was related to the decrease in the TFC and tangeretin. A total of 24 volatile compositions were identified, and storage tended to decrease the sensory properties of citrus puree by probiotic fermentation Overall, this study provides a potential method to innovate whole citrus fruit processing technol. and improve its nutritional value.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

de Fatima Alves Nonato, Carla’s team published research in Food Chemistry in 2022-08-01 | CAS: 483-76-1

Comparative analysis of chemical profiles and antioxidant activities of essential oils obtained from species of Lippia L. by chemometrics. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Due to the importance of diseases associated with oxidative stress, the search for natural antioxidants proves to be essential. This work aimed to compare the chem. composition and antioxidant potential of essential oils from the genus Lippia L. through chemometric anal. The essential oils were characterized by gas chromatog. coupled with mass spectrometry. Antioxidant potentials were determined by DPPH, ABTS, Deoxyribose and ¦Â-carotene protection, Iron chelation and reduction methods. All data were related by multivariate analyzes. Essential oils showed low similar chem. compositions and no statistically significant relationship. These showed relevant antioxidant activity, especially for L. sidoides that obtained IC50 of 5.22 ¡À 0.08¦Ìg/mL in ABTS capture. Multivariate analyzes showed the effectiveness of L. alba compounds to DPPH scavenging, Fe3+ reduction and ¦Â-carotene protection, and L. gracilis components to deoxyribose protect. Thus, studies proving the antioxidant potential of Lippia compounds against oxidative stress and their use in food conservation are fundamental.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Almadiy, Abdulrhman A.’s team published research in Environmental Science and Pollution Research in 2022-09-30 | CAS: 483-76-1

Bioactivity of Deverra tortuosa essential oil, its nanoemulsion, and phenylpropanoids against the cowpea weevil, a stored grain pest with eco-toxicological evaluations. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

The essential oil (EO) was hydrodistd. from of Deverra tortuosa aerial parts. Fifty-six components amounting 99.3% were identified in EO through using gas chromatog.-fame ionization detection (GC-FID) and (GC-MS). Phenylpropanoids, dillapiole (41.6%), elemicin (7.3%) and myristicin (5.1%), and the monoterpene, sabinene (4.2%) were identified as the major terpenes. An oil-in-water nanoemulsion (particle size 70.3 nm) was developed from EO adopting a low-energy method. The EO products showed insecticidal and biochem. effects against the cowpea weevil Callosobruchus maculatus. Based on a 48-h exposure period, the oil nanoemulsion exhibited a superior contact bioactivity (LC50=10.3¦Ìg/cm2), followed by EO (LC50=23.1¦Ìg/cm2), dillapiole (LC50=27.8¦Ìg/cm2), and myristicin (LC50=37.1¦Ìg/cm2). Upon fumigation, nanoemulsion and EO were superior as fumigants (LC50 after 48 h were 6.9 and 14.3¦Ìl/l, resp.). Test materials showed a residual bioactivity against C. maculatus, where EO, dillapiole, and myristicin showed the strongest grain protecting activity. EO products significantly inhibited acetylcholinesterase (AChE) activity of C. maculatus adults. Test products were safe toward the non-target earthworms and did not alter the viability of cowpea seeds. There are evidences for the potential of using EO of D. tortuosa and its nanoemulsion and phenylpropanoids as natural grain protectants against C. maculatus.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Asilbekova, D. T.’s team published research in Chemistry of Natural Compounds in 2022-09-30 | CAS: 483-76-1

Constituent Composition of Essential Oil and Fatty Acids from Fruit of Ferula tschimganica. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

The goal of the present work was to establish the compositions of essential oil (EO) and fatty acids of neutral (NL) and polar lipids (PL) from fruit of F. tschimganica. Fruit was collected by Candidate A. M. Nigmatullaev from a plant growing in the vicinity of Chimgan, Tashkent Region, during fruiting (Herbarium code Number 1511, 2015, ICPS, AS, RUz). Table 1 indicates that EO from fruit of the studied plant contained monoterpene (18 constituents) and sesquiterpene hydrocarbons (14), oxygenated monoterpenes (20) and sesquiterpenes (5), and the non-terpene O -containing compound tetradecan-1-ol. Table 2 presents the fatty-acid compositions of NL and PL that were established based on a combination of GC-FID and GC-MS data.

Constituent Composition of Essential Oil and Fatty Acids from Fruit of Ferula tschimganica. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Abrao, Fernando Yano’s team published research in South African Journal of Botany in 2022-09-30 | CAS: 483-76-1

Volatile oils from Psidium guineense Swartz leaves: Chemical seasonality, antimicrobial, and larvicidal activities. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Psidium guineense Swartz is a shrub used in urinary tract diseases, diarrhea, and dysentery. The aims of this study were to analyze the seasonal chem. variability of the volatile oils of P. guineense leaves for 12 mo, to evaluate the antimicrobial activity against bacteria and fungus, and the larvicidal activity against third-instar Aedes aegypti larvae. The identification of the volatile oil components was performed by gas chromatog. coupled with mass spectrometry (GC-MS). The antimicrobial and larvicidal activities were assessed by in vitro methodologies. The majority compounds of the volatile oil were (2Z,6E)-farnesol (15.1-51.2%), ¦Á-copaene (5.9-24.6%) and muurola-4,10(14)-dien-1¦Â-ol (2.7-9.6%). The composition varied according to rainfall occurrence: Cluster I (volatile oils from leaves collected in Apr., June, July, August, Sept., Oct., and Dec.- low precipitation months), Cluster II (volatile oils from leaves collected in Jan., Feb., March, May, and Nov. – higher precipitation levels). Cluster I and Cluster II showed strong to moderate activity against Cryptococcus neoformans (MIC = 32-64¦Ìg/mL) and Micrococcus luteus (MIC = 16-32¦Ìg/mL) while promising larvicidal activity was observed against Ae. aegypti (LC50 20.5-36.4¦Ìg/mL; LC90 47.5-70.1¦Ìg/mL). This is the first report describing the seasonal variability of P. guineense volatile oils, antifungal activity against yeasts, and larvicidal activity over Ae. aegypti.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

An, Huimin’s team published research in Food Chemistry in 2022-08-15 | CAS: 483-76-1

Study on the key volatile compounds and aroma quality of jasmine tea with different scenting technology. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

The aroma quality of jasmine tea refers to the strength and freshness of jasmine fragrance and its coordination with tea aroma, which is regulated by various volatile compounds In this study, seventy volatile compounds of jasmine tea scented by different scenting technol. were analyzed qual. and quant. by gas chromatog.-mass spectrometry (GC-MS). And seven compounds were identified as the key volatile compounds by weighted gene co-expression network anal. (WGCNA), orthogonal partial least squares discriminant anal. (OPLS-DA) and odor activity value (OAV). According to the equation describing seven key volatile compounds and quality of jasmine tea, the optimal scenting technol. was obtained, i.e., the amount of flowers (AF) was 65-78%, scenting time (ST) was 15-17 h, and scenting temperature (SW) was 35-40¡ãC. This study lays a foundation for the study of aroma characteristics of jasmine tea, and guides enterprises to improve jasmine tea processing technol.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Stamenkovic, Jelena G.’s team published research in Chemistry & Biodiversity in 2022-10-31 | CAS: 483-76-1

Phytochemical Analysis and Antibacterial Activity of Achillea coarctata Poir. Essential Oils. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Essential oils obtained from different parts of Achillea coarctata species (inflorescences, stem and leaves and the whole aerial part) collected on four different locations in Serbia have been investigated to evaluate the chem. composition and antibacterial activity of isolated oils. The aim of this study was to determine differences in the chem. composition of essential oils obtained from different plant parts and how different type of substrate as well as different climate conditions affect the chem. composition of essential oils. Oxigenated terpenes were reported to be the major constituents in almost all examinated samples with 1,8-cineole, caryophyllene oxide and cis-cadin-4-en-7-ol identified as dominant compounds Disk diffusion assay was used to determine antibacterial activity against two Gram-pos. (Bacillus subtilis subsp. spizizenii ATCC 6633 and Staphylococcus aureus ATCC 6538) and three Gram-neg. bacteria (Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 9027 and Salmonella abony ATCC 6017). The obtained results showed that essential oils obtained from A. coarctata exhibit significant antibacterial activity against tested bacteria strains. The best inhibitory effect was observed against S. aureus, while on the other hand P. aeruginosa showed high level of resistance to almost all examined essential oils.

Phytochemical Analysis and Antibacterial Activity of Achillea coarctata Poir. Essential Oils. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Jiang, Yifan’s team published research in Journal of Plant Physiology in 2022-07-31 | CAS: 483-76-1

Acute methyl jasmonate exposure results in major bursts of stress volatiles, but in surprisingly low impact on specialized volatile emissions in the fragrant grass Cymbopogon flexuosus. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Me jasmonate (MeJA) is an airborne hormonal elicitor that induces a fast rise of emissions of characteristic stress marker compounds methanol and green leaf volatiles (GLV), and a longer-term release of volatile terpenoids, but there is limited information of how terpene emissions respond to MeJA in terpene-storing species. East-Indian lemongrass (Cymbopogon flexuosus), an aromatic herb with a large terpenoid storage pool in idioblasts, was used to investigate the short- (0-1 h) and long-term (1-16 h) responses of leaf net assimilation rate (A), stomatal conductance (Gs) and volatile emissions to MeJA concentrations ranging from moderate to lethal. Both A and Gs were increasingly inhibited with increasing MeJA concentration in both short and long term. MeJA exposure resulted in a rapid elicitation, within 1 h after exposure, of methanol and GLV emissions. Subsequently, a secondary rise of GLV emissions was observed, peaking at 2 h after MeJA exposure for the highest and at 8 h for the lowest application concentration The total amount and maximum emission rate of methanol and the first and second GLV emission bursts were pos. correlated with MeJA concentration Unexpectedly, no de novo elicitation of terpene emissions was observed through the experiment Although high MeJA application concentrations led to visible lesions and desiccation in extensive leaf regions, this did not result in breakage of terpene-storing idioblasts. The study highlights an overall insensitivity of lemongrass to MeJA and indicates that differently from mech. wounding, MeJA-driven cellular death does not break terpene-storing cells. Further studies are needed to characterize the sensitivity of induced defense responses in species with strongly developed constitutive defenses.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

DeCarlo, Anjanette’s team published research in Natural Product Communications in 2022-07-31 | CAS: 483-76-1

Inter-Tree Variation in the Chemical Composition of Boswellia papyrifera Oleo-Gum-Resin. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Frankincense is a fragrant resin produced by Boswellia species, and has been used for centuries as a perfume, medicine, and incense, and is an important cosmetic and therapeutic product today. A number of studies have been conducted on the resin essential oils, but many have used com. sources outside of the country of origin, leading to potential taxonomic confusion or misidentification. Individual Boswellia papyrifera resin samples were each obtained directly from 11 individual trees in Sudan, hydrodistd., the volatile phytochems. determined by gas chromatog. methods, and the chem. compositions subjected to cluster anal. All samples were very similar, with high levels of octyl acetate (49.5%-81.0%) and octanol (6.5%-13.7%), and varying levels of diterpenoids (6.6%-32.7%). The cluster anal. indicated 3 highly similar groups, defined by (1) relatively higher levels of octyl acetate (58.9%-81.0%), but with low levels of diterpenoids (6.6%-18.6%); (2) relatively lower levels of octyl acetate (49.5%-61.3%), but with a higher proportion of diterpenoids (19.0%-22.8%); and (3) with octyl acetate (51.6%) and diterpenoids (32.7%).

Inter-Tree Variation in the Chemical Composition of Boswellia papyrifera Oleo-Gum-Resin. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Campos Alencar Oldoni, Fernanda’s team published research in Food Chemistry in 2022-09-15 | CAS: 483-76-1

Fruit quality parameters and volatile compounds from ¡äPalmer¡ä mangoes with internal breakdown. Recommended basis is Cadinene. Products is: https://www.ambeed.com/products/189165-77-3.html, 51905-84-1

The internal breakdown (IB) is a premature and uneven mango pulp ripening physiol. disorder that is noticed only when the fruit is sliced for consumption. Thus, there is a demand for anal. methods to detect IB in mangoes to avoid consumer dissatisfaction and reduce postharvest waste. In this work, physicochem. and volatile compounds were determined to evaluate the ability to predict pulp IB. Principal components anal. (PCA) and partial least squares discriminant anal. (PLS-DA) of the data show that color, firmness, and volatiles compounds are important to give some information about the physiol. changes caused by IB. The volatile compounds methacrylic acid, Et ester, isopentyl ethanoate, limonene oxide, (E)-2-pentenal, tetradecane, and ¦Ã-elemene were identified as chem. markers of IB. Therefore, mango phys. and chem. characteristics combined with PCA and PLS-DA were successfully employed for the identification of IB in mangoes, showing significant differences between healthy and IB fruits.

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem