scholarly journals Extending the postharvest life of unrefrigerated avocado (Persea americana Mill.) fruit by storage in polyethylene bags

1981 ◽  
Vol 14 (3) ◽  
pp. 219-226 ◽  
Author(s):  
G.R. Chaplin ◽  
M.G. Hawson
Keyword(s):  
Persea Americana ◽  
Postharvest Life ◽  
Polyethylene Bags

scholarly journals Heat-treating `Sharwil' Avocado for Cold Tolerance in Quarantine Cold Treatments

HortScience ◽  
1994 ◽  
Vol 29 (10) ◽  
pp. 1166-1168 ◽  
Author(s):  
Suzanne S. Sanxter ◽  
Kate A. Nishijima ◽  
Harvey T. Chan
Keyword(s):  
Cold Tolerance ◽  
Chilling Injury ◽  
Heat Treating ◽  
Persea Americana ◽  
Polyethylene Bags

Chilling injury symptoms were reduced when `Sharwil' avocados (Persea americana Mill.) were held at 37 to 38C for 17 to 18 hours and then air-cooled at 20C for 4 hours before storage at 1.1C for ≥14 days. In contrast, nonheated fruit developed severe surface discoloration and pitting. Chilling injury symptoms were reduced further when the heated fruit were stored in perforated polyethylene bags during 1.1C storage. No treatment equaled or surpassed the quality of fruit in nontreated controls.

scholarly journals Influence of Bioactive Compounds Incorporated in a Nanoemulsion as Coating on Avocado Fruits (Persea americana) during Postharvest Storage: Antioxidant Activity, Physicochemical Changes and Structural Evaluation

Antioxidants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 500 ◽  
Author(s):  
Antonio de Jesus Cenobio-Galindo ◽  
Juan Ocampo-López ◽  
Abigail Reyes-Munguía ◽  
María Luisa Carrillo-Inungaray ◽  
Maria Cawood ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Weight Loss ◽  
Histological Study ◽  
Persea Americana ◽  
Soluble Solids ◽  
Physicochemical Changes ◽  
Structural Evaluation ◽  
Postharvest Life ◽  
And Control ◽  
Orange Essential Oil

The objective of the present study was to determine the effect of the application of a nanoemulsion made of orange essential oil and Opuntia oligacantha extract on avocado quality during postharvest. The nanoemulsion was applied as a coating in whole fruits, and the following treatments were assessed: concentrated nanoemulsion (CN), 50% nanoemulsion (N50), 25% nanoemulsion (N25) and control (C). Weight loss, firmness, polyphenol oxidase (PPO) activity, total soluble solids, pH, external and internal colour, total phenols, total flavonoids, antioxidant activity by 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH), while the structural evaluation of the epicarp was assessed through histological cuts. Significant differences were found (p < 0.05) among the treatments in all the response variables. The best results were with the N50 and N25 treatments for firmness and weight loss, finding that the activity of the PPO was diminished, and a delay in the darkening was observed in the coated fruits. Furthermore, the nanoemulsion treatments maintained the total phenol and total flavonoid contents and potentiated antioxidant activity at 60 days. This histological study showed that the nanoemulsion has a delaying effect on the maturation of the epicarp. The results indicate that using this nanoemulsion as a coating is an effective alternative to improve the postharvest life of avocado.

Anti Microbial and Antileishmanial Active Acetogenins from Avacado (Persea americana) Fruits

Planta Medica ◽  
2012 ◽  
Vol 78 (05) ◽  
Author(s):  
HRW Dharmaratne ◽  
BL Tekwani ◽  
MR Jacob ◽  
NPD Nanayakkara
Keyword(s):  
Persea Americana

Antibacterial activity of avocado extracts (Persea americana Mill.) against Streptococcus agalactiae

Phyton ◽  
2016 ◽  
Vol 85 (1) ◽  
pp. 218-224 ◽  
Author(s):  
Cardoso PF ◽  
JA Scarpassa ◽  
LG Pretto-Giordano ◽  
ES Otaguiri ◽  
SF Yamada-Ogatta ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Agalactiae ◽  
Persea Americana

Composition of White Potato Starch (Ipomea batatas L.) with Avocado Seed Starch (Persea americana Mill) and Glyserol Concentration in Edible Film

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Musdar Musdar ◽  
Lukmanul Hakim ◽  
Juliani Juliani ◽  
Jailani Jailani
Keyword(s):  
Sweet Potato ◽  
Potato Starch ◽  
Persea Americana ◽  
Edible Film ◽  
Glycerol Concentration ◽  
White Potato ◽  
Ipomea Batatas ◽  
Sweet Potato Starch ◽  
Local Plants ◽  
Avocado Seed

White sweet potato starch (Ipomea batatas L.) and avocado seed starch (Parsea americana Mill) derived from local plants have the potential to be developed as agricultural products. Starch is a hydrocolloid compound as a potential local resource to be utilized. Glycerol function as an anti-freezing which is hygroscopic. This study aims to determine the ratio of white sweet potato starch with avocado seed starch and the concentration of glycerol for making edible film. This study was an experiment using a completely randimized factorial design with 2 (two) main factor consisting of a comparison of white sweet potato starch and avocado seed with 3 levels: P1 = 35%:65%., P2=50%:50%., P3=65%:35% and glycerol concentration with 3 levels: G1=1%., G2=2%., G3=3%. The best result reasearch were content of 23.03% (tratment P1G1), solubility of 55.57% (treatment P3G2)., swelling test of 9.83% (treatment P2g3)., elongation of 8.18% (treatment P3G2)

Physiochemical properties and antioxidant potential of Persea Americana seed oil

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Seed Oil ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Acid Value ◽  
Persea Americana ◽  
Antioxidant Potential ◽  
Physiochemical Properties ◽  
Physiochemical Parameters ◽  
Ic50 Value

Oil extracted from Persea Americana seed was assayed for its physiochemical properties and antioxidant potential using various standard methods. The oil content of the seed was found to be &lt; 10%. Brownish-red color oil was liquid at room temperature, with specific gravity of 0.91±0.02 g/mL. Other physiochemical parameters determined were; acid value (4.51±0.08 mgKOH/g), %FFA (2.26±0.08), peroxide value (2.40±0.57 mgO2/Kg), ester value (31.26±0.03 mgKOH/g), saponification value (35.76±0.07 mgKOH/g) and iodine value (23.5±0.07). The results of the antioxidant activities of the seed oil showed that the flavonoid content (80.00±1.41 mgQE/g) was ~10 folds higher than the phenolic content (8.27±0.06 mgGAE/g). The DPPH radical scavenging value was found to be 51.54±0.25% with an IC50 value of 4.68±0.02 mg/mL and reducing power with an average absorbance of 0.85±0.01 and an IC50 value of 0.001±0.02 mg/mL. Gallic acid showed better antioxidant activities than the oil studied. The results obtained in this study showed that Persea Americana seed oil has nutritional, industrial as well as medicinal potentials.

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