scholarly journals Effect of Coating of Aloe Vera Gelon Shelf Life of Grapes

2016 ◽  
Vol 4 (1) ◽  
pp. 58-68 ◽  
Author(s):  
Javed Ali ◽  
Suyash Pandey ◽  
Vaishali Singh ◽  
Prerna Joshi

The present study had been conducted to study the shelf life of grapes with coatings of Aloe Vera suspended in water with concentrations of 0, 10, 20 and 30 per cent Aloe veraand was stored in poly packaging and open plates under different temperatures of 0⁰C and 30⁰C in refrigerator and incubator. The data was compared with the original shelf life of grapes to determine the efficiency of the Aloe Vera coating. Aloe Vera based coatings provided good gloss and 20 per cent coating concentration gave the best visual and physicochemical results. It was found that 20 per cent coating concentration of Aloe Vera is the most effective and appropriate for the extension of shelf life of grapes.It was also found that the use of low temperature storage in combination with edible coating and packaging extends marketability by reducing moisture loss.In short, the shelf life of grapes can be increased by using Aloe Vera gel coating and the spoilage due to fungal infection of grapes can be reduced.

2021 ◽  
Vol 8 (2) ◽  
pp. 58-66
Author(s):  
Rosemond Godbless Dadzie ◽  
Robert Sarpong Amoah ◽  
Jerry Ampofo-Asiama ◽  
Bright Quaye ◽  
Nazir Kizzie-Hayford ◽  
...  

Aloe vera gel has been investigated as possible edible coating to help improve the storage life of fruits after harvest. The study sought to investigate the effect Aloe vera gel coating with or without citric acid pretreatment on the quality of eggplant fruits during low temperature storage and in shelf life. Briefly, eggplants were coated with Aloe vera gel (some fruits were pretreated with citrate prior to the coating) and the changes in physicochemical quality of the fruit measured during storage at 10 °C. After 14 days, however, some fruits were transferred for storage at room temperature until day 18. Coating with Aloe vera decreased moisture loss, and consequently, decreased weight loss and loss of firmness of the fruit. The coating did help maintain the phenolic content, ascorbate levels and antioxidant capacity of the fruit. Pre-treating the fruit with citrate did not improve quality, showing that Aloe vera gel can be applied alone to enhance the storage quality of eggplant fruit. Results obtained from this study shows that Aloe vera gel coating can be useful in extending the postharvest storage life and maintaining the quality of eggplant fruits during low temperature storage.


2016 ◽  
Vol 1 (1) ◽  
pp. 985-994
Author(s):  
Rina Marwina ◽  
Raida Agustina ◽  
Bambang Sukarno Putra

Abstrak.Penelitian ini bertujuan untuk melihat lama umur simpan buah tomat dengan menggunakan lapisan gel lidah buaya (Aloe vera L.) dengan berbagai variasi konsentrasi dan variasi suhu penyimpanan.Penelitian ini menggunakan tomat dengan tingkat kematangan optimum. Pada variasi konsentrasi gel lidah buaya (A) terdiri atas 4 perlakuan, yaitu tanpa gel lidah buaya (A1), konsentrasi 30% (A2), konsentrasi 50% (A3) dan konsentrasi 70% (A4), dan variasi penyimpanan yaitu suhu penyimpanan (B) terdiri atas 2 perlakuan, yaitu suhu B1 suhu ruang  (28oC) dan  B2 (suhu rendah 10oC ). Analisa data yang diamati meliputi susut bobot, kekerasan, vitamin C, total padatan terlarut, dan uji organoleptik (warna, tekstur, dan aroma).Dari hasil penelitian didapatkan perlakuan terbaik pada tomat dengan perlakuan konsentrasi gel lidah buaya 30% pada penyimpanan suhu rendah 10ºC masih diterima konsumen hingga hari ke 21. Penyimpanan perlakuan terbaik pada hari ke-12 untuk analisis susut bobot terdapat pada perlakuan konsentrasi gel lidah buaya 30% yang disimpan pada suhu 10ºC dengan nilai 15,52%, untuk analisis presentase kekerasanperlakuan terbaik terdapat pada konsentrasi 30% pada suhu rendah 10ºCnilai yaitu 1.357kg/cm2, dan analisis vitamin C perlakuan terbaik terdapat pada konsentrasi 30% pada suhu rendah 10ºCnilai 1,42 mg/50gr, sedangkan TPT perlakuan terbaik terdapat pada suhu rendah 10ºCdengan perlakuan tanpa konsetrasi gel lidah buaya nilai presentase yaitu 4,40 %Brix. Dari hasil pengujian organoleptik, panelis menolak tomat dengan perlakuan konsentrasi gel lidah buaya 30% yang disimpan pada suhu ruang 28oC pada hari penyimpanan ke-12, sedangkan pada penyimpanan suhu rendah 10oC panelis menolak tomatdengan konsentrasi gel lidah buaya 30%pada hari penyimpanan ke-21.Abstract. This study aimed to look at the old the shelf life of tomatoes by using the layer of gels of aloe vera (Aloe vera L.) with various concentrations and a temperature variations in of storage.This study uses the tomatoes with optimum maturity level. In a variation of concentration of aloe gel (A) composed of 4 treatment, ie without aloe vera gel (A1), the concentration of 30% (A2), the concentration of 50% (A3) and a concentration of 70% (A4), and a variety of storage ie storage temperature (B) consisting of two treatments, namely B1 temperature room temperature (28oC) and B2 (low temperature 10oC). Analysis of observed data include weight loss, violence, vitamin C, total dissolved solids, and organoleptic (color, texture, and aroma). From the results, the best treatment in tomatoes by treatment with 30% aloe vera gel at low temperature storage is still acceptable to consumers 10ºC until the 21st day storage best treatment on day 12 for analysis of weight loss treatment concentration contained in aloe vera gel 30% stored at a temperature of 10ºC with a value of 15.52%, for the analysis of the percentage of violence are the best treatment at a concentration of 30% at low temperature 10ºC value is 1,357 kg / cm2, and the analysis of vitamin C are the best treatment at a concentration of 30% at low temperature 10ºC value 1.42 mg / 50gr, while TPT best treatment there at low temperature 10ºC with treatment without concentration of aloe gel percentage value that is 4.40% Brix. From the results of organoleptic tests, the panel rejected the tomatoes by treatment with 30% aloe vera gel is stored at room temperature 28oC on the 12th day of storage, while the low temperature storage 10oC panelists refused tomatoes with aloe vera gel concentration of 30% on the day of deposit of the 21.


2021 ◽  
Vol 339 ◽  
pp. 128151
Author(s):  
Heng Liu ◽  
Shaohua Liu ◽  
Bingyang Du ◽  
Kuntian Dong ◽  
Yong Wang ◽  
...  

2021 ◽  
Vol 8 (3) ◽  
pp. 105-112
Author(s):  
Yandri Iskandar Pah ◽  
Sutrisno ◽  
Emmy Darmawati

Avocado is a climacteric fruit that still conducting physiological processes after being harvested, so that the fruit can reduce its freshness and increase its damage at room temperature. One treatment to extend the shelf life of avocados is by using an edible coating. Natural edible coating that has the potential to be used as a coating for avocados is aloe vera gel. The objective of this study was to determine an optimum concentration of edible coating made from aloe vera gel for avocado in order to extend its shelf life under room temperature storage. Three level concentrations of aloe vera gel used in this research were 30% (AV30), 50% (AV50), and without coating (Control). The quality parameters analyzed were weight loss, skin water content, percent of decay, hardness, color, and total soluble solids. The results showed that edible aloe vera gel coating significantly affected weight loss, skin water content, percent of decay, hardness, and total soluble solids of avocados. Among the treatments, the research found and recommend that the 50% of aloe vera coating was good enough to extend avocado until 18 days under room temperature storage. Keywords: Edible coatings, aloe vera gel, avocados, room temperature storage


2019 ◽  
Vol 55 (1) ◽  
pp. 92-98 ◽  
Author(s):  
Magda I. Pinzon ◽  
Leidy T. Sanchez ◽  
Omar R. Garcia ◽  
Ramón Gutierrez ◽  
Julio C. Luna ◽  
...  

Author(s):  
Prasenjit Kundu ◽  
Nayan Kishor Adhikary ◽  
Sutanu Maji

Mango is a crop of economic importance for its high export potentiality and usage as fresh and processed products of many kinds. However, increase its shelf life with maintaining postharvest quality and acceptability for long period is prime concerned since mango is a climacteric crop and cannot store for more than 5-7 days after ripening at ambient condition. Low temperature storage along with controlled atmospheric condition is being practised to keep fruits fresh. Controlled atmospheric storage reduces physiological processes, delayed ripening, but, can cause off flavour, internal tissue degradation, poor colouration and other physiological disorders. With the growing consciousness on bad effect of various chemical techniques and environmental hazards emphasizes a need to develop consumer friendly and environment friendly technology to increase shelf life of mango fruits with maintaining its quality and general acceptability. Use of edible coating is now becoming popular because it is a hazard free and environment friendly approach. It has tremendous potentiality to prolong shelf life of mango as whole fruit or fresh cut pieces. Generally, Aloe vera based edible coatings with chitosan have been studied for mango. The present review organised the various study exhaustively on different aspect of postharvest physiology of mango with use of edible coating which shall benefit the researchers for future study.


Author(s):  
Shafa Shofiani ◽  
Junianto . ◽  
Iis Rostini ◽  
Eddy Afrianto

This research aimed to know the shelf life of mullet fillet with basil leaves extract treatment in different concentration based on the amount of bacteria contained on mullet fillet during low temperature storage. The research was conducted at The Central Laboratory and The Laboratory of Fishery Product Processing, Padjadjaran University, Jatinangor. The method used in this research was experimental with four treatments by duplo. Basil leaves extract treatment concentrations were given in 0%, 1.5%, 3% and 4.5% concentrations, soaked for 30 minutes and stored at low temperature (5-10℃). The observations for grey mullet fillet with 0% concentration (without soaking on basil leaf extract treatment) were made on the 1st, 3td, 5th, 6th, 7th, 8th and 9th day of research. The observations for 1.5%, 3% and 4.5 concentrations were made on the 1st, 3rd, 5th, 6th, 7th, 8th, 9th, 10th, 11th and 12th day of storage period. The parameters observed in this research was the amount of bacteria. The result of research showed that the use of basil leaf extract in concentration of 3% on mullet fillet during low temperature storage has the longest shelf life, that was until 11 days with total amount of bacteria about 4.55 x  cfu/g.


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