scholarly journals Evaluation of different oxygen, carbon dioxide and nitrogen combinations employed to extend the shelf life of fresh-cut collard greens

2003 ◽  
Vol 21 (4) ◽  
pp. 676-680 ◽  
Author(s):  
Celso L. Moretti ◽  
Alessandra L. Araújo ◽  
Leonora M. Mattos
Keyword(s):  
Vitamin C ◽  
Storage Period ◽  
Soluble Solids ◽  
Total Chlorophyll ◽  
Minimally Processed ◽  
Total Vitamin ◽  
Collard Greens ◽  
Fresh Cut ◽  
Solids Content ◽  
And Control

Collard greens (Brassica oleracea var. acephala) "Manteiga" were harvested in commercial fields in Brasilia, Brazil, aiming to evaluate different oxygen, carbon dioxide and nitrogen combinations to extend the shelf life of the fresh-cut product. After harvest, leaves were taken to the postharvest laboratory, selected for external blemishes and minimally processed (3 mm thick) inside a cold room (13±2°C). After processing, fresh-cut collard greens were stored under two controlled atmosphere (CA) conditions (3% O2, 4% CO2; 5% O2, 5% CO2/balance N2), and normal air (control), at 5°C (95±2% RH), for six days. Daily, minimally processed collard greens were evaluated for total vitamin C, total chlorophyll, total soluble solids content, and titratable acidity. Total vitamin C content decreased for all treatments during the storage period. Storage under CA conditions delayed total vitamin C degradation for both atmospheres studied. At the end of the storage period, fresh-cut collard greens stored under 3% O2, 4% CO2 showed around 25% and 56% more vitamin C than the material stored under 5% O2, 5% CO2 and control, respectively. Total chlorophyll content decreased during the storage period. At the end of the experiment, fresh-cut collard greens stored under 3% O2, 4% CO2 showed 24% and 45% more total chlorophyll than the product stored under 5% O2, 5% CO2 and control, respectively. CA storage delayed organic acid degradation. On the sixth day, fresh-cut collard greens stored under 3% O2, 4% CO2 presented around 44% more organic acids than control. Total soluble solids content were not significantly affected.

scholarly journals IMPROVING THE QUALITY OF FRESH-CUT WATERMELON THROUGH GRAFTING AND ROOTSTOCK SELECTION

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 871d-871 ◽  
Author(s):  
Warren Roberts ◽  
Benny D. Bruton ◽  
Thomas W. Popham ◽  
Wayne W. Fish
Keyword(s):  
Sugar Content ◽  
Storage Period ◽  
Bacterial Count ◽  
Soluble Solids ◽  
Research Station ◽  
Soluble Solids Content ◽  
Lycopene Content ◽  
Fresh Cut ◽  
Solids Content

The shelf life and over-all quality of fresh-cut watermelon from two cultivars grafted onto four rootstocks were compared with fresh-cut fruit from the nongrafted cultivars. Fresh-cut cubic pieces of about 4.5 cm per side were prepared from ripe watermelons grown at the Lane Research Station and were stored at 5 °C in 35-oz PETE containers. Quality attributes of firmness, soluble solids content, lycopene content, and bacterial counts of the pieces were measured after 0, 5, and 10 days of storage. Sugar content of the cut fruit was independent of rootstock and remained constant over the ten days of storage. Lycopene content of the fruit decreased by 5% to 10% during the storage period, regardless of treatment. Bacterial count on the fruit from all treatments remained low and variable during the ten days at 5 °C. Firmness of cut pieces from fruit originating from the grafted plants was dependent upon the rootstock employed, and melons from grafted plants possessed firmer fruit than did those from the nongrafted plants. Overall, the firmness of fruit from all sources decreased 20% to 30% during the ten days of cold storage. However, the firmness of fruit from some of the rootstocks after 10 days of storage was equal to or significantly higher than that of the fruit from nongrafted plants when it was initially cut. Thus, these studies suggest that grafting to a proper rootstock will produce fresh-cut watermelon that is equal in sweetness and lycopene content to its nongrafted counterpart, but it will possess greater crispness throughout its storage on the supermarket shelf.

scholarly journals Pelilinan Efektif Memperpanjang Masa Simpan Buah Jambu Biji (Psidium guajava L.) ‘Kristal’

2018 ◽  
Vol 9 (1) ◽  
pp. 19-26
Author(s):  
Slamet Susanto ◽  
Delys Inkorisa ◽  
Dadang Hermansyah
Keyword(s):  
Weight Loss ◽  
Vitamin C ◽  
Storage Period ◽  
Titratable Acidity ◽  
Psidium Guajava ◽  
Soluble Solids ◽  
Guava Fruit ◽  
Performance Quality ◽  
Randomized Design ◽  
Solids Content

ABSTRACT‘Kristal’ guava fruit can easily be deteriorated during storage. The objective of this experiment was to study the effect of the waxing on the shelflife and quality of the ‘Kristal’ guava fruit. Experiment was conducted at the Postharvest Laboratory of Departemen of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University from February to May 2016. The experiment was designed using completely randomized design (CRD) with single factor consisted of 5 treatments, i.e., 0% of beewax (control), 2% of beewax, 4% of beewax, 6% of beewax and 8% of beeswax. The results showed that beewax coating suppressed weight loss and softness of fruit compared to the control fruit during storage period. Beewax coating did not significantly affect chemical quality such as soluble solids content, titratable acidity and vitamin C. The beeswax coating with 2% and 4% were able to extend shelflife of ‘Kristal’ guava fruit 9 days longer as compared to the control. Keywords: ‘Krístal’, performance, quality, waxing, weight loss ABSTRAK Buah jambu ‘Kristal’ dapat dengan mudah rusak selama penyimpanan. Tujuan percobaan ini yaitu mempelajari pengaruh pelilinan terhadap daya simpan dan kualitas buah jambu ‘Kristal’. Percobaan dilakukan di Laboratorium Pascapanen, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor dari bulan Februari sampai Mei 2016. Percobaan dirancang menggunakan rancangan acak lengkap (RAL) dengan faktor tunggal terdiri atas 5 perlakuan, yaitu 0% dari lilin lebah (kontrol), 2% dari lilin lebah, 4% lilin lebah, 6% lilin lebah dan 8% lilin lebah. Hasil penelitian menunjukkan bahwa pelapisan lilin lebah menekan susut bobot dan kelunakan buah dibandingkan dengan kontrol selama masa penyimpanan. Pelapisan lilin lebah tidak secara nyata mempengaruhi kualitas kimia buah seperti kandungan padatan terlarut, keasaman titrasi dan vitamin C. Pelapisan lilin lebah dengan konsentrasi 2% dan 4% mampu memperpanjang masa simpan buah jambu ‘Kristal’ 9 hari lebih lama dibandingkan dengan kontrol. Kata Kunci: kualitas, ‘Kristal’, pelilinan, penampilan, susut bobot

scholarly journals Quality of strawberries subjected to pre-harvest UV-C radiation

2021 ◽  
Vol 56 ◽  
Author(s):  
Izabel Camacho Nardello ◽  
Rufino Fernando Flores Cantillano ◽  
Jardel Araújo Ribeiro ◽  
Gerson Kleinick Vignolo ◽  
Marcelo Barbosa Malgarim ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Experimental Design ◽  
Vitamin C ◽  
Fragaria X Ananassa ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Single Factor ◽  
Solids Content ◽  
Uv C

Abstract The objective of this work was to evaluate the influence of the use of UV-C radiation at an intensity of 0.53 KJ m-2, during strawberry (Fragaria x ananassa) cultivation, on the physicochemical and phytochemical parameters of the fruits. The used experimental design was completely randomized, in a single-factor arrangement with 11, 19, 29, and 39 UV-C applications and without UV-C application. The hue of the fruits was smaller at the end of the study period. pH varied in strawberries that received 39 applications of UV-C, and the soluble solids content differed with 19 applications. Antioxidant activity was lower in fruits with 11, 19, and 29 UV-C applications, whereas vitamin C content was lower only in fruits that received 29 applications. The use of UV-C radiation at an intensity of 0.53 KJ m-2, during strawberry cultivation, affects the physicochemical and phytochemical parameters of the fruits, but does not cause losses in their quality.

scholarly journals Qualidade de frutos de mangabeira de diferentes estágios de maturação tratados com CaCl2

2021 ◽  
Vol 10 (3) ◽  
pp. e21010313340
Author(s):  
Alexandre Passos Oliveira ◽  
Pryanka Thuyra Nascimento Fontes ◽  
Luiz Fernando Ganassali de Oliveira Junior
Keyword(s):  
Storage Period ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Ambient Atmosphere ◽  
Climacteric Fruit ◽  
Organoleptic Characteristics ◽  
The Difference ◽  
Solids Content ◽  
Hancornia Speciosa ◽  
Two Stages

Hancornia speciosa is a fruit tree, popularly known as mangabeiras. The mangaba, fruits of this tree, are quite appreciated for their organoleptic characteristics. Because it is a climacteric fruit, this fruit has very high perishability. The use of products that extend the useful life is necessary. Calcium chloride (CaCl2) has been shown to be an alternative in post-harvest because it promotes few changes in fruit quality and increases the storage period. Thus, the objective of this work was to evaluate quality attributes of mangaba fruits in two stages of maturation, 'Immature' and 'Mature', submitted to CaCl2 application, in four storage times (0, 2, 4 and 6 days) under ambient atmosphere. During the experiment, the loss of fresh weight, color, pH, titratable acidity, soluble solids and SS/TA ratio were evaluated. It was verified that the 'mature' fruits showed a higher acidity and soluble solids content, even with the application of CaCl2, the difference that the loss with the application of CaCl2 was smaller. Unlike '‘Immature’ and ‘Immature’ fruits with CaCl2 in which these characteristics were acquired as the experiment was conducted, in addition to presenting lower values for weight loss, pH and color.

scholarly journals Use of Aloe Vera Gel-Based Edible Coating with Natural Anti-Browning and Anti-Oxidant Additives to Improve Post-Harvest Quality of Fresh-Cut ‘Fuji’ Apple

Agronomy ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 515 ◽  
Author(s):  
Vittorio Farina ◽  
Roberta Passafiume ◽  
Ilenia Tinebra ◽  
Eristanna Palazzolo ◽  
Giuseppe Sortino
Keyword(s):  
Cold Storage ◽  
Hydroxypropyl Methylcellulose ◽  
Aloe Vera ◽  
Soluble Solids ◽  
Post Harvest ◽  
Organic Farm ◽  
Aloe Vera Gel ◽  
Fresh Cut ◽  
Solids Content ◽  
Apple Quality

Recently, there is increasing use of edible and biodegradable films and packaging that are both environmentally friendly and functional for storage and market distribution. Fresh-cut ‘Fuji’ apples, harvested in an organic farm, were treated, using a spraying technique, with three new edible coatings based on Aloe vera gel (AVG—40% v/w) and in combination with natural additives: lemon essential oil (LEO—1% v/w) and hydroxypropyl methylcellulose (HPMC—0.1% v/w) and compared with untreated sample (CTR), the physicochemical and sensory characteristics and the proximate compounds were evaluated. During cold storage, weight loss, soluble solids content, and color of uncoated slices were reduced, while softening, ripening, browning, and acidity were accelerated. In contrast, the AVG/HPMC treatment significantly delayed the above parameters related to post-harvest quality loss, while the AVG/LEO treatment delayed the browning processes, maintaining an excellent color during cold storage. Concerning proximate compounds, the treatments did not alter their concentration in the fruit tissues. Sensory analyses revealed no detrimental effect on taste, aroma, or flavor. Our data evidenced the positive effect of Aloe vera gel in combination with LEO and HPMC on fresh-cut apple quality as an innovative and sustainable technique to maintain fresh-cut apple quality.

scholarly journals Effects of several sanitisers for improving quality attributes of minimally processed Fragaria vesca strawberry

2013 ◽  
Vol 31 (No. 1) ◽  
pp. 49-54 ◽  
Author(s):  
S. Nogales-Delgado ◽  
A.M. Fernández-León ◽  
J. Delgado-Adámez ◽  
M.T. Hernández-Méndez ◽  
D. Bohoyo-Gil
Keyword(s):  
Lactic Acid ◽  
Sodium Hypochlorite ◽  
Storage Period ◽  
Good Alternative ◽  
Sensory Attributes ◽  
Minimally Processed ◽  
Microbial Counts ◽  
Fresh Cut ◽  
Washing Water

In order to decrease microbial contamination, fresh-cut industry commonly uses sodium hypochlorite as a disinfection agent, however, the by-products such as trihalometanes and chloramines are potentially harmful for human health making necessary the search for alternative disinfectant agents. A comparative study on the effectiveness of different disinfection methods on the quality of minimally processed F. vesca strawberry is presented. The fruit was processed in a clean room through the following steps: reception, cutting, washing, draining, and packaging. The processed strawberries were packaged in thermally sealed polypropylene trays using passive modified atmosphere. During a storage period of 8 days at 4ºC, the quality parameters, sensory attributes, and microbial counts were determined. As conclusion, the use of lactic acid at a concentration of 2.5 g/l in the washing water was effective in reducing microbial counts, maintaining the sensory attributes and quality of the product during the storage. The present study demonstrates that the use of lactic acid in the washing water could be a good alternative of the use of sodium hypochlorite and suggests that strawberries could make an acceptable fresh-cut product.  

scholarly journals Changes in Physicochemical Properties and Volatiles of Kiwifruit Pulp Beverage Treated with High Hydrostatic Pressure

Foods ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 485 ◽  
Author(s):  
Yajing Chen ◽  
Xiaoping Feng ◽  
Hong Ren ◽  
Hongkai Yang ◽  
Ye Liu ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Vitamin C ◽  
Physicochemical Properties ◽  
High Hydrostatic Pressure ◽  
Total Content ◽  
Soluble Solids ◽  
Refrigerated Storage ◽  
Beverage Samples ◽  
Heat Treated ◽  
Solids Content

Physicochemical properties and volatiles of kiwifruit pulp beverage treated with high hydrostatic pressure (HHP, 400–600 MPa/5–15 min) were investigated during 40-day refrigerated storage. Compared with heat treatment (HT), HHP ranged from 400–500 MPa was superior in retaining vitamin C, fresh-like color and volatiles, while soluble solids content and pH were not affected significantly. Furthermore, HHP improved brightness and inhibited browning of kiwifruit pulp beverage. Samples treated at 400 MPa for 15 min showed significantly higher vitamin C content and lower ∆E values over 40 days than heat-treated kiwifruit pulp beverage. The total content of alcohols, esters, acids, and ketones gradually increased, whereas the total aldehydes content decreased during storage. Interestingly, HHP treatment at 500 MPa for 15 min mostly retained important characteristic volatiles including hexanal and (E)-2-hexenal, indicating this treatment was more conducive to preserve the original fruity, fresh, grassy and green notes of kiwifruit pulp beverage than HT.

Prediction of Soluble Solids Content and Post-Storage Internal Quality of Bulida Apricots Using near Infrared Spectroscopy

2007 ◽  
Vol 15 (3) ◽  
pp. 179-188 ◽  
Author(s):  
Marena Manley ◽  
Elizabeth Joubert ◽  
Lindie Myburgh ◽  
Ester Lotz ◽  
Martin Kidd
Keyword(s):  
Cold Storage ◽  
Regression Models ◽  
Near Infrared ◽  
Storage Period ◽  
Multivariate Adaptive Regression Splines ◽  
Soluble Solids ◽  
Internal Quality ◽  
Soluble Solids Content ◽  
Classification Rate ◽  
Solids Content

The development of internal breakdown of South African Bulida apricots during cold storage, rendering the fruit unsuitable for canning, causes significant post-harvest losses. Regression models to predict internal post-storage quality using near infrared (NIR) spectroscopy and multivariate classification techniques were developed using NIR spectra of the intact fruit collected prior to storage and subjective quality evaluations performed after a cold storage period of four weeks. A correct classification rate of 69% was obtained using multivariate adaptive regression splines (MARS) compared to 50% obtained by soft independent modelling by class analogy (SIMCA). NIR regression models developed for soluble solids content (SSC) of intact fruit as well as for direct NIR measurements on the exposed fruit tissue gave similar results, thus confirming sufficient NIR light penetration into the intact fruit. The best prediction results were obtained when two spectral measurements per fruit (one on each half of the fruit), compared to single measurements, were used.

scholarly journals Shelf-life enhancement of papaya with aloe vera gel coating at ambient temperature

2016 ◽  
Vol 13 (1) ◽  
pp. 131-136 ◽  
Author(s):  
MR Sharmin ◽  
MN Islam ◽  
MA Alim
Keyword(s):  
Vitamin C ◽  
Shelf Life ◽  
Aloe Vera ◽  
Storage Period ◽  
Soluble Solids ◽  
Chemical Parameters ◽  
Aloe Vera Gel ◽  
Physico Chemical ◽  
Storage Behavior ◽  
Physical Changes

In this experiment the effects of aloe vera gel coating on storage behavior of papaya at room temperature (290C-310C) was studied. Physico-chemical parameters such as color, physical changes, moisture, ash, acidity, vitamin C, protein, fat and total soluble solids (TSS) of papaya and aloe vera was determined at 3 days interval during the storage period. Among the physico-chemical parameters, color, physical changes, total weight loss and TSS contents increased significantly, whereas moisture content, vitamin C and titrable acidity decreased during storage. Control and 0.5% aloe vera treated papaya decayed from 6 days onward and completely decayed within 12 days of storage. On the other hand, 1% and 1.5% aloe vera gel coated papaya maintained their shelf-life for 9 and 12 days, respectively. Some of 1.5% aloe vera coated papaya decayed after 15 days. Papaya treated with 1.5% aloe vera solution, maintained their color & physical changes compared to other treatments up to 12 days of storage. The overall results showed the superiority of 1.5% aloe vera gel coating in extending the shelf-life of papaya upto 15 days compared to that of 0.5%, 1% aloe vera gel coating and control papaya. The present study describes the preparation and potential application of aloe vera gel coatings for enhancing the postharvest life and quality of papaya.J. Bangladesh Agril. Univ. 13(1): 131-136, June 2015

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