Ultrastructural Study of the Development of Oil Cells in the Mesocarp of Avocado Fruit

Platt‐Aloia, K. A.; Oross, J. W.; Thomson, W. W.

doi:10.1086/337343

Cited by 36 publications

(36 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4a-c show the pictures before and after being subjected to different extraction methods. Figure 4b clearly shows the three different layers of the idioblastic oil cell wall reported by Platt et al [13]. These layers consist of cellulose (C)-suberin (S)-cellulose (C).…”

Section: Electron Transmission Microscopymentioning

confidence: 66%

“…Platt et al [13] found that the idioblastic oil cell's wall consists of three different layers: an outer inert layer made of cellulose, an intermediate layer made of suberin, and another layer of cellulose as the inner (third) layer. There is no accumulation of oil observed until the intermediate suberin layer and the third layer of cellulose are formed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of a Novel Oil Extraction Method on Avocado (Persea americana Mill) Pulp Microstructure

Ortiz

Dorantes

Gallndez

et al. 2004

Plant Foods Hum Nutr

View full text Add to dashboard Cite

Avocado (Persea americana Mill) is an oil-rich fruit, the pulp containing up to 33% of the oil. It is rich in monounsaturated fatty acids, and has nutritional properties similar to olive oil. However, there is no widespread commercial method for oil recovery from avocado pulp. The aim of this study is to contribute to the limited knowledge about the micro- and ultrastructure of avocado. It presents a micro- and ultrastructural study of avocado pulp before and after three different oil recovery methods, in order to relate the quality and yielding of the oil to the cellular changes in the pulp. This study was made using light, scanning electron, and electron transmission microscopy. The microwave-squeezing method yielded 67% of the oil, preserved the shape of the cell by causing only a slight modification, and gave the best quality oil. Hexane extraction yielded 59%, causing the idioblastic oil cells to become irregularly shaped and rough-surfaced. Acetone extraction yielded 12%, and deformed the cellular wall while the oil remained inside, giving a poor quality oil. On the basis of these results, the microwave-squeezing method is suggested as a new option for oil recovery from avocadopulp. This method could be adapted for industrial processing.

show abstract

Section: Electron Transmission Microscopymentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Effect of a Novel Oil Extraction Method on Avocado (Persea americana Mill) Pulp Microstructure

Ortiz

Dorantes

Gallndez

et al. 2004

Plant Foods Hum Nutr

View full text Add to dashboard Cite

show abstract

“…For most species studied so far, the origin of oil-secreting cells is in the ground meristem (Bakker and Gerritsen, 1990;Bakker et al, 1991;Mariani et al, 1989;Maron and Fahn, 1979;Moura et al, 2005;Platt-Aloia et al, 1983;Tucker, 1976;West, 1969), and they rarely originate from the protodermis (Ni et al, 2007). In P. umbellatum, the origin of secretory cells is diverse, and is related to its location in the leaf.…”

Section: Discussionmentioning

confidence: 99%

“…This extraplasmatic space is bound by a membrane, and it develops from cupule-shaped protuberances at fixed points in the cell wall (Maron and Fahn, 1979). The cell wall of oil-secreting cells usually has a trilamellar structure made up of an outer cellulose layer or primary wall, an intermediary suberin layer, and an inner cellulose layer or tertiary wall, which usually constitute the cupule (Bakker and Gerritsen, 1990;Bakker et al, 1991;Fahn, 1979;Mariani et al, 1989;Maron and Fahn, 1979;Platt and Thomson, 1992;Platt-Aloia et al, 1983).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, several authors tend to generalize the developmental course of secretory cells once they create a pattern of development that is directly related to the nature of the secretion (Baas and Gregory, 1985;Bakker and Gerritsen, 1990;Bakker et al, 1991;Mariani et al, 1989;Maron and Fahn, 1979;Platt-Aloia et al, 1983). However, differences are likely to be found in the development of oil-secreting cells in several families such as Annonaceae, Lauraceae, Magnoliaceae and Myristicaceae (Postek and Tucker, 1983;West, 1969).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Secretory cells in Piper umbellatum (Piperaceae) leaves: A new example for the development of idioblasts

Marinho

Zacaro

Ventrella

2011

Flora

View full text Add to dashboard Cite

a b s t r a c tThis work aims to investigate the origins and development of secretory cells in Piper umbellatum (L.) Miq. (Piperaceae) leaves as well as the course and the nature of their secretion. The results were compared with studies in oil-secreting cells of several species. Fully expanded fresh leaves were sectioned and subjected to different histochemical tests. Leaves in different developmental stages were fixed and processed for study under light and scanning and transmission electron microscopy techniques. The secretory cells show mixed secretion made up of hydrophobic (oleoresin) and hydrophilic (phenolic compounds and alkaloids) compounds. Secretory cells originate either from the protodermis or the ground meristem. The growth of these cells occurs primarily by increasing the volume of the central vacuole, which corresponds to an extraplasmatic space connected to a protuberance of the wall. Electron-opaque compounds are observed initially in leucoplasts, while electron-dense compounds occur in small vesicles in the cytoplasm. Both are accumulated in the central vacuole which is already developed. Besides the mixed chemical nature of the secretion identified in secretory cells of P. umbellatum leaves, these secretory cells differ from those that have already been described mainly because of the development of the central vacuole prior to the accumulation of the secretion.

show abstract

Cellular Changes in “Hass” Avocado Mesocarp During Cold‐Pressed Oil Extraction

Yang

Hallett

Rebstock

et al. 2018

J Americ Oil Chem Soc

View full text Add to dashboard Cite

The aim of this study was to understand factors affecting oil release from "Hass" avocado cells during the cold-pressed oil extraction process. Early-season "Hass" avocado fruit and pulp were sampled from a commercial extraction process. Light microscopy and electrical impedance spectroscopy were used to examine avocado flesh structure at defined steps during the extraction process (destoning, grinding, malaxing, and decanting). Most parenchyma cells were ruptured during destoning, grinding, and mixing before malaxing. In contrast, the other oil bearing cells, idioblast cells, appeared to remain unruptured and intact during the extraction process. The greatest reduction in electrical resistance was observed after the destoning step. There were also significant differences between the resistances of flesh after destoning, grinding, and prior to malaxing samples. Malaxing for two hours assisted the process of oil aggregation, which led to a greater oil yield. These findings will help to develop methods to enhance oil extraction from early-season "Hass" avocado fruit.

show abstract

Ultrastructural Study of the Development of Oil Cells in the Mesocarp of Avocado Fruit

Cited by 36 publications

References 19 publications

Effect of a Novel Oil Extraction Method on Avocado (Persea americana Mill) Pulp Microstructure

Effect of a Novel Oil Extraction Method on Avocado (Persea americana Mill) Pulp Microstructure

Secretory cells in Piper umbellatum (Piperaceae) leaves: A new example for the development of idioblasts

Cellular Changes in “Hass” Avocado Mesocarp During Cold‐Pressed Oil Extraction

Contact Info

Product

Resources

About