Application of steam explosion in oil extraction of camellia seed (<i>Camellia oleifera</i> Abel.) and evaluation of its physicochemical properties, fatty acid, and antioxidant activities

Zhang, Shanying; Yingjie, Pan; Zheng, Lili; Yang, Yang; Zheng, Xiaoyan; Ai, Binling; Xu, Zhimin; Sheng, Zhanwu

doi:10.1002/fsn3.924

Cited by 42 publications

(25 citation statements)

References 39 publications

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“…Yu and colleagues developed an extraction method based on water and were able to achieve better performance in the ABTS assay with this new method than with an organic solvent [ 40 ]. An unconventional work was also developed with and without steam explosion pre-treatment and the authors concluded that the steam explosion increased the DPPH scavenging activity of the extract [ 41 ]. Defatted seeds were also investigated in a study which compared the proficiency of isopropanol and butanol as extraction solvents being the best results obtained with isopropanol [ 42 ].…”

Section: Antioxidant Propertiesmentioning

confidence: 99%

A Review on the Biological Activity of Camellia Species

Teixeira

Sousa

2021

Molecules

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Medicinal plants have been used since antiquity to cure illnesses and injuries. In the last few decades, natural compounds extracted from plants have garnered the attention of scientists and the Camellia species are no exception. Several species and cultivars are widespread in Asia, namely in China, Japan, Vietnam and India, being also identified in western countries like Portugal. Tea and oil are the most valuable and appreciated Camellia subproducts extracted from Camellia sinensis and Camellia oleifera, respectively. The economic impact of these species has boosted the search for additional information about the Camellia genus. Many studies can be found in the literature reporting the health benefits of several Camellia species, namely C. sinensis, C. oleifera and Camellia japonica. These species have been highlighted as possessing antimicrobial (antibacterial, antifungal, antiviral) and antitumoral activity and as being a huge source of polyphenols such as the catechins. Particularly, epicatechin (EC), epigallocatechin (EGC), epicatechin-3-gallate (ECG), and specially epigallocatechin-3-gallate (EGCG), the major polyphenols of green tea. This paper presents a detailed review of Camellia species’ antioxidant properties and biological activity.

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Section: Antioxidant Propertiesmentioning

confidence: 99%

A Review on the Biological Activity of Camellia Species

Teixeira

Sousa

2021

Molecules

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“…Camellia oleifera ( C. oleifera ), native to East Asia, is a valuable oilseed crop belonging to the genus Camellia of the Theaceae family 1 . It has been cultivated for more than 1000 years, with an annual output of seeds exceeding 2.4 million tons distributed over an area of 4.4 million hectares in China 2 .…”

Section: Introductionmentioning

confidence: 99%

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Yan

et al. 2021

Hortic Res

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Camellia oleifera (C. oleifera) is one of the four major woody oil-bearing crops in the world and has relatively high ecological, economic, and medicinal value. Its seeds undergo a series of complex physiological and biochemical changes during ripening, which is mainly manifested as the accumulation and transformation of certain metabolites closely related to oil quality, especially flavonoids and fatty acids. To obtain new insights into the underlying molecular mechanisms, a parallel analysis of the transcriptome and proteome profiles of C. oleifera seeds at different maturity levels was conducted using RNA sequencing (RNA-seq) and isobaric tags for relative and absolute quantification (iTRAQ) complemented with gas chromatography-mass spectrometry (GC-MS) data. A total of 16,530 transcripts and 1228 proteins were recognized with significant differential abundances in pairwise comparisons of samples at various developmental stages. Among these, 317 were coexpressed with a poor correlation, and most were involved in metabolic processes, including fatty acid metabolism, α-linolenic acid metabolism, and glutathione metabolism. In addition, the content of total flavonoids decreased gradually with seed maturity, and the levels of fatty acids generally peaked at the fat accumulation stage; these results basically agreed with the regulation patterns of genes or proteins in the corresponding pathways. The expression levels of proteins annotated as upstream candidates of phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) as well as their cognate transcripts were positively correlated with the variation in the flavonoid content, while shikimate O-hydroxycinnamoyltransferase (HCT)-encoding genes had the opposite pattern. The increase in the abundance of proteins and mRNAs corresponding to alcohol dehydrogenase (ADH) was associated with a reduction in linoleic acid synthesis. Using weighted gene coexpression network analysis (WGCNA), we further identified six unique modules related to flavonoid, oil, and fatty acid anabolism that contained hub genes or proteins similar to transcription factors (TFs), such as MADS intervening keratin-like and C-terminal (MIKC_MADS), type-B authentic response regulator (ARR-B), and basic helix-loop-helix (bHLH). Finally, based on the known metabolic pathways and WGCNA combined with the correlation analysis, five coexpressed transcripts and proteins composed of cinnamyl-alcohol dehydrogenases (CADs), caffeic acid 3-O-methyltransferase (COMT), flavonol synthase (FLS), and 4-coumarate: CoA ligase (4CL) were screened out. With this exploratory multiomics dataset, our results presented a dynamic picture regarding the maturation process of C. oleifera seeds on Hainan Island, not only revealing the temporal specific expression of key candidate genes and proteins but also providing a scientific basis for the genetic improvement of this tree species.

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“…SECSP and SECSO were obtained from camellia seed in our previous study, as described by Zhang et al. (2019a, 2019b), as shown in Supplementary Text. Pancreatin (CAS 8049‐47‐6, catalogue no.…”

Section: Methodsmentioning

confidence: 99%

“…(Tu et al ., 2017; Xiao et al ., 2017). Our previous study found that steam explosion pretreatment increased both oil extraction yield and bioactive compounds from camellia seed (Zhang et al ., 2019a). Moreover, steam‐exploded camellia seed oil (SECSO) exhibited higher antioxidant activity.…”

Section: Introductionmentioning

confidence: 99%

Steam‐exploded camellia (Camellia oleifera Abel.) seed protein improves the stability of camellia seed oil emulsions

Zhang

Yin

Zheng

et al. 2022

Int J of Food Sci Tech

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We aimed here to investigate the ability of steam-exploded camellia seed protein (SECSP) in stabilising steam-exploded camellia seed oil-in-water emulsion in comparison with soy protein isolate (SPI). Emulsions with different SECSP and SPI contents (0.5, 1, 1.5 and 2 g 100 mL À1 ) were formulated and the effect of protein concentration on emulsion droplet size, zeta (f)-potential, physical stability and bioaccessibility was examined. The stability of emulsion increased with increasing protein concentration. SECSP emulsion was characterised by smaller droplet sizes, higher surface charge and better stability than SPI emulsion. Furthermore, SECSP emulsion exhibited good digestive stability. SECSP emulsion showed creaming only at protein concentrations above 0.5 g 100 mL À1 after 28 days of storage, while SPI emulsion showed stratification and flocculation during the same storage period. Hence, steam explosion pretreatment physical modification of camellia seed protein (CSP) provides a novel approach of utilising proteins for emulsions stabilisation, and digestive stability improvement under gastrointestinal conditions.Keywords Soy protein isolate, stability, steam-exploded camellia seed oil, steam-exploded camellia seed protein.

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Application of steam explosion in oil extraction of camellia seed (Camellia oleifera Abel.) and evaluation of its physicochemical properties, fatty acid, and antioxidant activities

Cited by 42 publications

References 39 publications

A Review on the Biological Activity of Camellia Species

A Review on the Biological Activity of Camellia Species

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Steam‐exploded camellia (Camellia oleifera Abel.) seed protein improves the stability of camellia seed oil emulsions

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