Simultaneous extraction of oil and tea saponin from  Camellia oleifera  Abel. seeds under subcritical water conditions

Wu, Hong; Li, Changzhu; Li, Zhenmei; Liu, Rukuan; Zhang, Aihua; Xiao, Zhihong; Ma, Li; Li, Jilie; Deng, Shuguang

doi:10.1016/j.fuproc.2018.02.014

Cited by 63 publications

(44 citation statements)

References 31 publications

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“…SWE is also called pressurized water extraction (PWE) or hot water extraction (HWE). SWE has been successfully used for the extraction of fatty acids, mannitol, antioxidants (phenols and flavonoids), sugars, resorcinol, essential oils, carotenoids, and pectin [261], polychlorinated biphenyls (PCBs) in soil [262], dioxins in soil [263], explosives and heavy metals in soil [264], anthocyanins from fruit berry [265], europium and yttrium from waste cathode-ray tube phosphor [266], oil and tea saponins [267], isoflavones from herbal plants [268] and pesticides in soil [269].…”

Section: Green Alternatives To Extraction Solventsmentioning

confidence: 99%

Green Approaches to Sample Preparation Based on Extraction Techniques

Aly

Górecki

2020

Molecules

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Preparing a sample for analysis is a crucial step of many analytical procedures. The goal of sample preparation is to provide a representative, homogenous sample that is free of interferences and compatible with the intended analytical method. Green approaches to sample preparation require that the consumption of hazardous organic solvents and energy be minimized or even eliminated in the analytical process. While no sample preparation is clearly the most environmentally friendly approach, complete elimination of this step is not always practical. In such cases, the extraction techniques which use low amounts of solvents or no solvents are considered ideal alternatives. This paper presents an overview of green extraction procedures and sample preparation methodologies, briefly introduces their theoretical principles, and describes the recent developments in food, pharmaceutical, environmental and bioanalytical chemistry applications.

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Section: Green Alternatives To Extraction Solventsmentioning

confidence: 99%

Green Approaches to Sample Preparation Based on Extraction Techniques

Aly

Górecki

2020

Molecules

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“…The content of polysaccharide, protein, crude fat, and tea saponin were determined by phenol-sulfuric acid method, [25] Kjeldahl method, [26] Soxhlet extraction method, [27] and vanillin-sulfuric acid colorimetry method, [28] respectively. The content of polysaccharide, protein, crude fat, and tea saponin were determined by phenol-sulfuric acid method, [25] Kjeldahl method, [26] Soxhlet extraction method, [27] and vanillin-sulfuric acid colorimetry method, [28] respectively.…”

Section: Composition Of Emulsified Oilmentioning

confidence: 99%

A Novel Aqueous Extraction for Camellia Oil by Emulsified Oil: A Frozen/Thawed Method

Yang

Wang³

et al. 2019

Euro J Lipid Sci & Tech

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Emulsion is inevitable during the aqueous extraction of oil from oilseeds. In this study, a new aqueous extraction method for camellia oil is investigated. During the extraction, the emulsified oil is collected, frozen, and thawed, and the free oil is obtained (AEEF). The optimal processing conditions are as follows: three times as much water as camellia seed powder (w/w), grinding at 70 °C for 6 min, repeating 2 cycles to collect the emulsified oil; then the emulsified oil is frozen (−20 °C) /thawed (50 °C) for 2 cycles. The yield of camellia oil is 89.37 ± 0.51%, which is significantly higher (p < 0.05) than that of microwave‐assisted aqueous enzymatic extraction (MAAEE, 83.05 ± 1.14%), and is similar to that of cold press extraction (CPE, 90.85 ± 2.05%), as well as solvent extraction (SE) coupled with refining. Additionally, the total oxidation value (TOTOX) of the free oil extracted by using AEEF (AEEF‐Oil, 6.82 ± 0.12%) is significantly lower (p < 0.05) than those of MAAEE, CEP, or SE. In comparison to SE‐Oil and CEP‐Oil, AEEF‐Oil has higher (p < 0.05) contents of α‐tocopherol and squalene, and lower (p < 0.05) benzo(a)pyrene contents, and contains more favorable natural volatile compounds. The results indicate that the novel AEEF may be a promising aqueous extraction method. Practical Application: The novel aqueous extraction method for camellia oil by emulsified oil – frozen/thawed has acceptable oil yields. The obtained camellia oil has high levels of bioactive components, low contents of hazardous substances, and more characteristic volatile flavor compounds. AEEF is an improved aqueous extraction technology for edible oil without refining and using n‐hexane, which could be potentially applied in industrial production of camellia oil due to its safety, nutrition, and environment‐friendly treatments. Aqueous extraction is a promising technique for edible oil extraction from oilseeds. The novel technology of aqueous extraction for camellia oil through emulsified oil – frozen/thawed (AEEF) is investigated. In comparison to solvent extraction, cold press extraction, and microwave‐assisted aqueous enzymatic extraction of camellia oil, the obtained camellia oil by AEEF has an acceptable oil yield, high quality, and nutritional value. AEEF is a safe, simple and environmental‐friendly aqueous extraction technology.

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“…Camellia oleifera is considered to be nutritious and healthy, owing to its fatty acids composition and the presence of bioactive compounds, such as tea polyphenol, tea saponin and squalene, etc. [4]. Camellia oil (CO) is obtained from Camellia oleifera seeds, is characterized by the high proportion of oleic acid (74-89%) [5].…”

Section: Introductionmentioning

confidence: 99%

Study on Relationship between Polar Compounds and LF-NMR Properties in Fried Camellia Seed Oil

Wang¹,

Liu²,

Da-le³

2018

JFNR

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The correlation between classic column chromatography and LF-NMR to determine the total polar compounds were investigated in this study. Results revealed that the content of polar compounds in fried camellia seed oil were keeping elevated during deep frying and reach to reject point up to 24 h, the content level were 27.21%. The significant correlation was existed between TPC and S21, LF-NMR could replace the classic column chromatography as the rapid detection way to determine the TPC in fried oils.

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Simultaneous extraction of oil and tea saponin from Camellia oleifera Abel. seeds under subcritical water conditions

Cited by 63 publications

References 31 publications

Green Approaches to Sample Preparation Based on Extraction Techniques

Green Approaches to Sample Preparation Based on Extraction Techniques

A Novel Aqueous Extraction for Camellia Oil by Emulsified Oil: A Frozen/Thawed Method

Study on Relationship between Polar Compounds and LF-NMR Properties in Fried Camellia Seed Oil

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