Introduction and Overview

Sawamura, Masayoshi

doi:10.1002/9780470613160.ch1

Cited by 18 publications

(19 citation statements)

References 27 publications

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“…It should be noted that myrcene was considerably more abundant than limonene which is known as the main volatile constituent in the peel of common citrus such as orange, grapefruit and lemon. [1,3] The high content of myrcene in the volatiles of citrus peel was reported on a few citrus species including Kiyookadaidai (Citrus sp.). [1,[21][22][23] With the data reported in these papers, the quantitative data of major constituents in the Jabara peel extract are shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…[1,3] The high content of myrcene in the volatiles of citrus peel was reported on a few citrus species including Kiyookadaidai (Citrus sp.). [1,[21][22][23] With the data reported in these papers, the quantitative data of major constituents in the Jabara peel extract are shown in Table 2. Despite a great number of citrus studies reported up to now, there are only a few papers [1,21] in which myrcene was the most abundant volatile constituent of citrus peel like Jabara.…”

Section: Resultsmentioning

confidence: 99%

“…[1,[21][22][23] With the data reported in these papers, the quantitative data of major constituents in the Jabara peel extract are shown in Table 2. Despite a great number of citrus studies reported up to now, there are only a few papers [1,21] in which myrcene was the most abundant volatile constituent of citrus peel like Jabara. This specific composition of volatiles indicated that Jabara was a rare species among citrus fruits.…”

Section: Resultsmentioning

confidence: 99%

“…a From Sawamura. [1] b Calculated from quantitative analysis. Myrcene, which was the most abundant constituent in the extract, showed the highest FD factor of 16 384 (No.…”

Section: Odour-active Compounds In Jabara Peel Extractmentioning

confidence: 99%

“…Numerous studies have been reported on the volatile compositions and key odorants in the peel oils. [1][2][3] Jabara (Citrus jabara Hort. ex Tanaka) is a type of sour citrus fruit and indigenous to Kitayama-village, Wakayama, Japan.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of aroma compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka)

Omori¹,

Nakahara²,

Umano³

2011

Flavour & Fragrance J

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Volatile compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka), a Japanese sour citrus, have been investigated using GC-FID, GC-MS and GC-olfactometry. The peel extract was obtained by solvent-assisted flavour evaporation after solvent extraction. The GC-FID and GC-MS analyses led to the identification of 49 compounds, including myrcene (46.8%), limonene (28.2%) and γ-terpinene (15.5%) as major constituents. Interestingly, the level of myrcene was much higher than that of limonene known as the main volatile constituent in citrus peel. This specific composition indicated that Jabara was a rare species among citrus fruits. Application of aroma extract dilution analysis revealed 22 odour-active compounds with the flavour dilution (FD) factor ranged from 8 to 16 384, and 19 of these compounds were identified. Myrcene, which showed the highest FD factor of 16 384, was regarded as the most character impact odorant in the Jabara peel extract. It should be noted that (3E,5Z)-1,3,5-undecatriene (FD = 512), (3E,5Z,8Z)-1,3,5,8-undecatetraene (FD = 256), 1,3,5,7-undecatetraene (unknown stereochemistry, FD = 256) and (6Z,8E)-6,8,10-undecatrien-3-one (FD = 16) were detected as potent odorants with green and fruity aroma, despite their trace levels in the extract. In addition to these, 7-methyl-1,6-octadien-3-one, having a metallic and mushroom-like odour, was identified as a further key contributor to the aroma of Jabara peel extract. This novel odorant has been reported for the first time as a volatile constituent in a natural product.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…a From Sawamura. [1] b Calculated from quantitative analysis. Myrcene, which was the most abundant constituent in the extract, showed the highest FD factor of 16 384 (No.…”

Section: Odour-active Compounds In Jabara Peel Extractmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of aroma compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka)

Omori¹,

Nakahara²,

Umano³

2011

Flavour & Fragrance J

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Deterpenation techniques of citrus essential oils and the role of oxyterpenes in food industry

Türkmenoğlu,

Özmen

2023

Flavour & Fragrance J

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Application of EOs in the food industry are wide‐ranging from preservation to production of food packaging materials. As a flavouring agent, citrus oil is one of the most popular EO used in food and beverages with other EOs. For instance, there are many studies relating the volatile compounds of sweet orange and more than 200 components of sweet orange EOs have been described as ‘components of flavor’. Oxygenated derivatives, such as alcohols, ketones, aldehydes, esters and epoxides, provide preservative and flavour effects on food products but their levels are no more than 10% in citrus EOs generally. Therefore, deterpenation methods can be applied to EOs and oxygenated derivative concentrations would be increased. This study reviews primary oxyterpenes existing in citrus EOs, their use in the food industry, deterpenation methods applied to some types of citrus EOs and gives information about their main advantages and disadvantages. In conclusion, membrane separation techniques are proposed in order to purify citrus EOs on the basis of being environmentally friendly and not required any solvents both for separation.

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Reticine A, a new potent natural elicitor: isolation from the fruit peel of Citrus reticulate and induction of systemic resistance against tobacco mosaic virus and other plant fungal diseases

Wang

Liu

et al. 2020

Pest Management Science

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Background: Systemic acquired resistance (SAR) induced by elicitors is a highly satisfying form of resistance that protects plants against invading pathogens. Exploration and development of new elicitors is a promising alternative to conventional biocides in resistant pest management. In our previous broad screening, fruit peel extract of Citrus reticulata Blanco exhibited the ability to induce SAR in tobacco. Result: A new potent elicitor reticine A was isolated from the fruit peel extract of industrial crop C. reticulate and its structure was well elucidated. In vivo assays showed that reticine A had considerable control efficacies at 100 and 500 ∼g mL −1 , being superior to commercial elicitor benzothiadiazole (BTH) (100 ∼g mL −1). Reticine A had no significant impact on the virulence of tobacco mosaic virus (TMV) particles under in vitro conditions. Application of reticine A induced a local hypersensitive reaction (HR), systemic accumulation of H 2 O 2 and salicylic acid (SA), systemic increase in defensive enzyme activities and systemic upregulated expression of pathogenesis-related (PR) proteins, suggesting its induction of SAR in tobacco. The expression of NPR1 and SA biosynthesis genes ICS and PAL were systemically upregulated. Conclusion: SAR induced by reticine A against TMV in tobacco was demonstrated and the mechanism might be attributed to activating the expression of several defensive genes mediated by an SA signal. This study highlights the potential of reticine A which is recommended to be applied directly or as an active ingredient in the crude extract formulation ahead of time in the field, as well as being a potential lead compound for further optimization.

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Introduction and Overview

Cited by 18 publications

References 27 publications

Characterization of aroma compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka)

Characterization of aroma compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka)

Deterpenation techniques of citrus essential oils and the role of oxyterpenes in food industry

Reticine A, a new potent natural elicitor: isolation from the fruit peel of Citrus reticulate and induction of systemic resistance against tobacco mosaic virus and other plant fungal diseases

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