Analysis of growth and physicochemical changes in apple cv. Anna in a high-altitude tropical climate

The objective of this research was to carry out an analysis of growth and physicochemical changes in cv. Anna apple in the Colombian high-altitude tropics using on the accumulation of growing degree days (GDD). Fruit samplings were taken every 15 days after anthesis (DAA) until harvest at 100 DAA (892.37 GDD). The dry and fresh weight and the equatorial and polar diameters followed a simple sigmoidal pattern. This was confirmed with the behavior of the growth rates. The equatorial and polar diameters increased drastically between 455.39 and 589.32 GDD (45 and 60 DAA), while the weight did not, indicating that the void spaces increased in the pulp during this period. The respiratory rate had the highest value (61.93±6.79 mg CO2 kg-1 h-1) at 159.61 GDD (15 DAA) and then decreased continuously until harvest. The firmness increased from 159.61 to 455.39 GDD and, then continuously decreased, at harvest, it was 38.38±3.48 N. The total soluble solids increased and had an ending value of 8.58±0.37ºBrix. The total titratable acidity increased from 159.61 to 319.79 GDD (30 DAA), and then decreased until the end of the study with an acidity of 0.71±0.03%. The color index increased linearly as a function of development, but the values were <0 at harvest. These results are an important advance for knowledge on the behavior of apple cv. Anna under high-altitude tropical conditions.

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Physicochemical properties of seven outstanding strawberry (Fragaria x ananassa Duch.) varieties cultivated in Cundinamarca (Colombia) during maturation

Ciencia y Tecnología Agropecuaria ◽

10.21930/rcta.vol19_num1_art:848 ◽

2018 ◽

Vol 19 (1) ◽

Author(s):

Gerhard Fischer ◽

David López-Valencia ◽

Manuel Sánchez-Gómez ◽

John Fabio Acuña-Caita

Keyword(s):

Titratable Acidity ◽

Fruit Weight ◽

Fragaria X Ananassa ◽

Maturity Index ◽

Soluble Solids ◽

Maturity Stage ◽

Fresh Weight ◽

Respiration Rates ◽

Total Titratable Acidity ◽

Maturation State

The strawberry market in Cundinamarca (Colombia) is mainly size driven with no consideration for its maturation state and nutritional quality, wasting therefore, its organoleptic and nutritional potential. For that reason, the physicochemical differences among seven strawberry varieties (Albión, Dulce Ana, Lucía, Monterrey, Ruby June, Sabrina and Ventana) cultivated in the municipality of Sibaté (Cundinamarca) were established. Fruits collected from a productive plot with homogeneous cultivation management conditions were analyzed in six maturity states, establishing the degree of red pigmentation according to the Colombian Standard ntc 4103. Fresh weight, size, color, firmness, total soluble solids (tss), total titratable acidity (tta), maturity and respiration indices were evaluated. Fruits in stages 4, 2 and 3 developed their largest size and weight, where the variety Dulce Ana stands out. The highest color index values were found in the maturity stage 5 in the variety Ventana. Moreover, the highest firmness values were recorded in stages 4 and 5 in the varieties Monterrey and Ventana. The varieties Sabrina, Dulce Ana and Monterrey accumulated the highest tss concentration and the last two showed the best maturity relations. Respiration rates increased with maturation, especially from stage 3. The results suggest that the optimum commercialization and consumption points are stages 3 and 4, namely because these stages exhibit the highest maturity index and fruit weight. Among the varieties studied, Monterrey stands out due to its firmness and maturity index.

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The importance of pruning to the quality of wine grape fruits (Vitis vinifera L.) cultivated under high-altitude tropical conditions

Agronomía Colombiana ◽

10.15446/agron.colomb.v32n3.47048 ◽

2014 ◽

Vol 32 (3) ◽

pp. 341-348 ◽

Cited By ~ 1

Author(s):

Pedro José Almanza-Merchán ◽

Gerhard Fischer ◽

Germán Eduardo Cely R.

Keyword(s):

High Altitude ◽

Fruit Quality ◽

Titratable Acidity ◽

Soluble Solids ◽

Vitis Vinifera L ◽

Cabernet Sauvignon ◽

Tropical Conditions ◽

Factor Design ◽

Grape Varieties

Since 1998, the Ain-Karim Vineyard has been growing different grape varieties for the production of high-altitude tropical wines in the municipality of Sutamarchan, located in the Alto Ricaurte region of Boyaca (Colombia). Pruning is used to limit the number and length of branches, generating a suitable balance between plant vigor and production; thereby, regulating fruit quantity and quality and ensuring reserves for the subsequent production. This study aimed to evaluate the effect of three pruning types (short = two buds on two spurs; long = five buds on three spurs and mixed = combination of short and long pruning types) on the fruit quality of V. vinifera, Cabernet Sauvignon and Sauvignon Blanc varieties. To accomplish this, a completely randomized two-factor design was used. Physicochemical variables of fruit quality (fresh cluster weight, water content, total soluble solids (TSS), total titratable acidity (TTA), technical maturity index (TMI), and pH) were determined at harvest. The long pruning type presented the highest values for the fresh cluster weight and TSS of the fruits from both varieties and a higher TMI in the Cabernet Sauvignon variety. These results indicate that, under the conditions of the vineyard, long pruning is the most suitable.

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Fruit yield and composition in orange trees cv. 'Lane Late' in response to nitrogen fertilization in Sandy Typic Hapludalf soil

Ciência Rural ◽

10.1590/0103-8478cr20140869 ◽

2017 ◽

Vol 47 (3) ◽

Author(s):

Gustavo Brunetto ◽

◽

Cesar Cella ◽

Alcione Miotto ◽

Eduardo Girotto ◽

...

Keyword(s):

Fruit Juice ◽

Organic Matter Content ◽

Titratable Acidity ◽

N Fertilization ◽

Fruit Yield ◽

Soluble Solids ◽

Total N ◽

Total Titratable Acidity ◽

Orange Trees ◽

The Impact

ABSTRACT: Little is known about the impact of N fertilization on fruit production and composition in orange groves grown in soils with low or medium organic matter content in Rio Grande do Sul (RS). This study aimed to evaluate how N fertilization of orange trees cv. 'Lane Late' in a sandy soil may interfere in fruit yield and composition of fruit and juice. The experiment was conducted with orange trees cv. 'Lane Late' growing in Sandy Typic Hapludalf soil, in Rosário do Sul (RS). The plants received applications of 0, 20, 40, 60, 80, 100, 120, 140 and 160kg N ha-1. Total N in leaves, number of fruits per plant, yield, fresh weight, fruit diameter, peel thickness, percentage of fruit juice, peel color, juice color, ascorbic acid content, total soluble solids (TSS) and total titratable acidity were evaluated in 2010/2011 and 2011/2012 crops. In the first crop, especially yield, number of fruits per plant, TSS content in fruit juice and ratio decreased with increasing N rate applied. However, in the second crop, the total titratable acidity of the fruit juice prominently increased with the dose of N applied. In both crops, results were highly influenced by rainfall distribution, which affect the plant physiology, soil N dynamics and, consequently, probability of response to N applied and the loss of mineral N in the soil.

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Studies of chemical and enzymatic characteristics of Yacon (Smallanthus sonchifolius) and its flours

Food Science and Technology ◽

10.1590/s0101-20612013005000020 ◽

2013 ◽

Vol 33 (1) ◽

pp. 75-83 ◽

Cited By ~ 11

Author(s):

Juciane de Abreu Ribeiro Pereira ◽

Maria de Fátima Píccolo Barcelos ◽

Michel Cardoso De Angelis Pereira ◽

Eric Batista Ferreira

Keyword(s):

Oxalic Acid ◽

Dietary Fiber ◽

Titratable Acidity ◽

Soluble Solids ◽

Average Yield ◽

Total Dietary Fiber ◽

Smallanthus Sonchifolius ◽

Total Titratable Acidity ◽

Wet Weight ◽

Peroxidase Enzymes

Due to the importance of studies on yacon related to health, its in natura pulp, in natura peel, pulp flour, and peel flour were chemically analyzed in terms of its centesimal composition, specific minerals, total dietary fiber and fractions, pH, total soluble solids, total titratable acidity, tannins, oxalic acid, and nitrate. The polyphenoloxidase and peroxidase enzymatic activities were evaluated for in natura pulp and peel only. Yacon pulp and peel flour presented average yield of 7.94% and 10.86%, respectively. The in natura pulp presented a higher moisture and carboydrate content and lower lipid, protein, total dietary fiber, and ash than those of the peel flour. The same pattern was observed for pulp flour when compared to peel flour. The highest tannin, nitrate, and oxalic acid levels were found in the peel flour, 15,304.5 mg.kg-1, 1,578.3 mg.kg-1, and 7,925.0 mg.kg-1 (wet weight), respectively. The polyphenoloxidase and peroxidase enzymes presented higher enzymatic activity in the yacon peel. Based on the results obtained, it can be said that the yacon and its derivatives are important dietary carbohydrate and mineral sources and contain antinutritional substance contents lower than those harmful to health.

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Productivity, quality of fruits and architecture of Jalapeño pepper at different planting densities

Horticultura Brasileira ◽

10.1590/s0102-053620190312 ◽

2019 ◽

Vol 37 (3) ◽

pp. 331-337

Author(s):

Carlos Francisco Ragassi ◽

Juliana Zucolotto ◽

Lucas M Gomes ◽

Cláudia SC Ribeiro ◽

Nuno Rodrigo Madeira ◽

...

Keyword(s):

Fruit Quality ◽

Plant Architecture ◽

Block Design ◽

Titratable Acidity ◽

Soluble Solids ◽

Randomized Complete Block Design ◽

Total Titratable Acidity ◽

Second Year ◽

Increase In Productivity

ABSTRACT Mechanizing the harvest of Jalapeño pepper involves changes in the production system. Spacings between plants in rows (10 to 40 cm; 60 cm fixed between rows) were evaluated in relation to plant architecture, productivity and fruit quality of cultivar BRS Sarakura during three years, in a randomized complete block design with five replicates. Productivity (41.9 to 78.8 t ha-1) and plant height (40.1 to 47.3 cm) responded linearly to density; on the other hand, productivity per plant responded negatively (0.48 to 1.04 kg plant-1). The stem first bifurcation height was little influenced. Fruit chemical analyses were carried out in the second year of the experiment; spacing significantly influenced pH (5.36 to 4.84), total titratable acidity (TTA) (0.48 to 0.36%) and total soluble solids (TSS)/TTA ratio (11.5 to 15.6); no influence on TSS (5.65%) was noticed, though. The increase of plant population provided an increase in productivity without affecting fruit quality; the highest height of the first bifurcation achieved may not be enough to enable mechanized harvesting of the cultivar BRS Sarakura.

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Parâmetros físico-químicos de polpas de fruta produzidas na cidade de Petrolina – PE

Revista Verde de Agroecologia e Desenvolvimento Sustentável ◽

10.18378/rvads.v10i4.3415 ◽

2015 ◽

Vol 10 (4) ◽

pp. 01 ◽

Cited By ~ 1

Author(s):

A. C. Honorato ◽

C. B. R. Dias ◽

E. B. Souza ◽

I. R. B. Carvalho ◽

K. S. M. Sousa

Keyword(s):

Ascorbic Acid ◽

Physicochemical Parameters ◽

Titratable Acidity ◽

Soluble Solids ◽

Chemical Characteristics ◽

Fruit Pulp ◽

Total Titratable Acidity ◽

Physical And Chemical ◽

The City

Este trabalho teve como objetivo avaliar os parâmetros físico-químicos de polpas de fruta produzidas e comercializadas na cidade de Petrolina-PE, tendo como referência a Instrução Normativa nº 1, de 7 jan. 2000, do Ministério da Agricultura que define as características físicas e químicas estabelecendo limites mínimos e máximos específicos para cada polpa de fruta. Foram avaliadas duas marcas (1 e 2) de polpas de abacaxi, cacau, caju, graviola, maracujá e umbu, analisadas quanto aos parâmetros de pH, sólidos solúveis totais (SST), acidez total titulável (ATT), ácido ascórbico, relação SST/ATT e sólidos totais. Os resultados permitem inferir que a marca 2 apresentou qualidade superior na maioria dos parâmetros avaliados quando comparado com a marca 1. Entretanto para alguns sabores de polpa as duas marcas não atenderam os valores padrões. Entre as polpas o único sabor que apresentou os padrões exigidos foi a polpa de caju em ambas as marcas, e a que apresentou resultado de pior qualidade diante dos padrões foi a polpa de maracujá principalmente da marca 1. Dessa forma constata-se que há grandes variações entre as marcas, e entre alguns parâmetros, o que compromete a qualidade das polpas, prejudicando assim o consumidor.Physicochemical parameters of fruit pulps produced in Petrolina – PEAbstract: This study aimed to evaluate the physicochemical parameters of fruit pulps produced and marketed in the city of Petrolina-PE, with reference to the Instruction Nº 1 of 7 January 2000 of the Ministry of Agriculture, which defines the physical and chemical characteristics setting minimum and maximum limits specific to each fruit pulp. We evaluated two brands (1 and 2) of pineapple, cocoa, cashew, soursop, passion and umbu fruit pulp, analyzed for pH, total soluble solids (TSS), total titratable acidity (TTA), ascorbic acid, TSS / TTA and total solids parameters. Results show that the brand 2 showed superior in most evaluated parameters when compared to the brand 1. However, for some pulp flavors of both brands did not reached the standards values. Among the pulps, the only flavor that presented the required standards was the cashew pulp in both brands, and presented the results of lower quality on the standards was the passion fruit pulp mainly brand 1. Thus, it appears that there are great variations between brands and between some parameters, which compromises the quality of the pulp, thus impairing the consumer.

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Bioactive compounds in gladiolus flowers

Ornamental Horticulture ◽

10.1590/2447-536x.v27i3.2310 ◽

2021 ◽

Author(s):

Alexandra Goede de Souza ◽

Eduardo Affonso Jung ◽

Vinícius Petermann Benedicto ◽

Leosane Cristina Bosco

Keyword(s):

Titratable Acidity ◽

Soluble Solids ◽

Total Phenolic ◽

Anthocyanin Content ◽

Cut Flowers ◽

Flavonoid Content ◽

Total Titratable Acidity ◽

Total Antioxidant ◽

Relationship Of ◽

The Relationship

Abstract Flowers have received special attention not only for their ornamental nature but also for their nutraceutical, cosmetic, aromatic, and culinary properties. This study aimed to characterize physicochemical attributes and the antioxidant capacity of flowers of four gladiolus cultivars. The cultivars used were White Friendship, Rose Supreme, Jester, and T704. We analyzed the content of total soluble solids (SS), total titratable acidity (TA), SS/TA ratio, pH, vitamin C, anthocyanin, flavonoids, total phenolic compounds (TPC), total antioxidant activity (TAA), and the relationship of TPC with flavonoids and TAA for each cultivar. The results showed that the Jester flowers had the lowest TA and highest SS/TA ratio, indicating the best flavor. Jester also had the highest flavonoid content, similarly to the White Friendship and Rose Supreme. As a result, these cultivars have flowers with higher TPC and TAA content than T704. The anthocyanin content was the characteristic attribute of cultivar T704, due to its purple pigmentation. Gladiolus flowers, traditionally used in landscaping and as cut flowers, have the potential for use in human nutrition, particularly the White Friendship, Rose Supreme, and Jester cultivars.

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Ultrasound Improves Antimicrobial Effect of Sodium Hypochlorite and Instrumental Texture on Fresh-Cut Yellow Melon

Journal of Food Quality ◽

10.1155/2018/2936589 ◽

2018 ◽

Vol 2018 ◽

pp. 1-6 ◽

Cited By ~ 4

Author(s):

Denes K. A. Rosario ◽

Ana Lucia A. Duarte ◽

Marina C. M. Madalao ◽

Manoela C. Libardi ◽

Luciano J. Q. Teixeira ◽

...

Keyword(s):

Sodium Hypochlorite ◽

Fruits And Vegetables ◽

Titratable Acidity ◽

Antimicrobial Effect ◽

Texture Profile ◽

Physicochemical Changes ◽

Bacterial Microbiota ◽

Total Titratable Acidity ◽

Ultrasound Application ◽

Instrumental Texture

Ultrasound combined with sanitizers is efficient for the reduction of microbiological contaminants in fruits and vegetables. However, the physicochemical changes remain to be elucidated. Therefore, the isolated and combined effect of ultrasound (40 kHz, 500 W) and sodium hypochlorite (NaOCl) (100 mg/L) for 5 min in the bacterial microbiota and physicochemical changes on yellow melon (Cucumis melo L.) were evaluated. Mesophilic aerobic bacteria (MAB), pH, total titratable acidity (TTA), and texture profile were performed. No changes in pH and TTA (p>0.05) were obtained. Firmness, chewiness, cohesiveness, and gumminess increased (p<0.05) after the ultrasound application. A synergistic effect between ultrasound and NaOCl in the MAB reduction was achieved. Therefore, ultrasound improves the antimicrobial effect of NaOCl and texture profile without undesirable chemical changes.

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THERMAL REQUIREMENTS OF CITRUS FRUITS GRAFTED ONTO ROOTSTOCKS IN THE LOW-MIDDLE REGION OF THE SÃO FRANCISCO RIVER BASIN

Revista Caatinga ◽

10.1590/1983-21252018v31n209rc ◽

2018 ◽

Vol 31 (2) ◽

pp. 336-343

Author(s):

FÁDIA SAMARA SANTOS NASCIMENTO ◽

VALTEMIR GONÇALVES RIBEIRO ◽

DÉBORA COSTA BASTOS ◽

JUCIENY FERREIRA DE SÁ ◽

PEDRO HENRIQUE DIAS NASCIMENTO

Keyword(s):

River Basin ◽

Titratable Acidity ◽

Soluble Solids ◽

Production Cycle ◽

Middle Region ◽

Degree Days ◽

Sao Francisco River ◽

São Francisco River ◽

D 12 ◽

Accumulated Degree Days

ABSTRACT To understand the production cycle of a particular cultivar in a given region, it is necessary to obtain information related to its phenology and the accumulated degree days. The purpose of this study was to evaluate the phenological cycle of citrus species grafted onto two rootstocks and grown in the Low-Middle Region of the São Francisco River Basin, in particular with respect to accumulated degree days. The experiment was conducted using ‘Rubi’ and ‘Pera D-12’ oranges and ‘Page’ mandarins. Two rootstocks were used, namely ‘Cravo’ and ‘Volkameriano’ lemon species that were drip irrigated in the Campo Experimental de Bebedouro, an experimental field owned by Embrapa Semiárido. ‘Page’ mandarins with ‘Cravo’ or ‘Volkameriano’ rootstocks exhibited a subperiod (0-10) of 183.32 and 181.24 days, respectively. Meanwhile, ‘Pera D-12’ and ‘Rubi’ oranges with ‘Cravo’ rootstocks had values of 249.57 and 178.58 days, respectively, while those with ‘Volkameriano’ rootstocks had values of 226.35 and 200.41 days, respectively. The accumulated degree days were measured from the initial sprouting to harvesting, which took place when the fruits presented a soluble solids/titratable acidity ratio equal to or greater than 12. ‘Page’ mandarins required 2,720 degree days, whereas ‘Pera D-12’ and ‘Rubi’ oranges required approximately 3,390 and 2,280 degree days, respectively. Finally, ‘Pera D-12’ and ‘Rubi’ oranges with either rootstock presented cycles characterized as mid-season and precocious, respectively, while ‘Page’ mandarins had precocious cycles.

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Reuse of sand, crushed sugarcane and peanut hull-based substrates for cherry tomato cultivation

Scientia Agricola ◽

10.1590/s0103-90162007000600011 ◽

2007 ◽

Vol 64 (6) ◽

pp. 630-635 ◽

Cited By ~ 5

Author(s):

Carolina Fernandes ◽

José Eduardo Corá ◽

Leila Trevizan Braz

Keyword(s):

Titratable Acidity ◽

Production Costs ◽

Soluble Solids ◽

Good Growth ◽

Cherry Tomato ◽

Average Yield ◽

Growth Season ◽

Yield And Quality ◽

Total Titratable Acidity ◽

Peanut Hull

The reuse of substrates for more than one growing season is an alternative to reduce production costs. The objective of this work was to evaluate the yield and quality fruits of the cherry tomato (Lycopersicon esculentum) grown in reused substrates. The experimental design was a complete randomized block, with a factorial array of 7 × 2 (seven substrates and two growth periods), with four replications. The seven substrates consisted of different combinations of sand (S), crushed sugarcane (CS) and peanut hull (PH). The substrates used were: S1 = S; S2 = [(2/3 S) + (1/3 CS)]; S3 = [(2/3 S) + (1/3 PH)]; S4 = [(2/3 S) + (1/6 CS) + (1/6 PH)]; S5 = [(1/2 S) + (1/2 CS)]; S6 = [(1/2 S) + (1/2 PH)] and S7 = [(1/3 S) + (1/3 CS) + (1/3 PH)]. These substrates were tested as new (one growth season), and reused (two sequentially growth seasons). The cherry tomato average yield was 9.07 kg m-2 when growth on the new substrates, and 8.44 kg m-2 when growth on the reused ones. The fruit quality was not affected by the reutilization of the substrates. The average values were 6.5 ºBrix for total soluble solids; 0.6 g for citric acid per 100 g for total titratable acidity and 4.2 for pH. A substrate consisting of equal parts of the three components can be recommended as a good growth medium for cherry tomato. All the substrates tested can be efficiently reused, at least once.

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