Effect of heat and thermosonication treatments on watercress (Nasturtium officinale) vitamin C degradation kinetics

This study investigated the degradation kinetics of the sensory attributes of commercial whole mango (cv. Ubá) juice and evaluated its sensory acceptability during storage. Samples of the product were stored in a BOD incubator at 25, 35, and 45 ºC under 24 hours light (650 lux) for 120 days. Sensory analyses (Quantitative Descriptive Analysis - QDA) were conducted with trained panel and consumers. The correlations between sensory and physicochemical characteristics (instrumental color and vitamin C content) were also assessed. Flavor, aroma, and color vary with temperature and time of storage. Aroma and flavor were most affected by temperature with values of Q10 and Ea equal to 4.16 and 25.31 kcal.mol-1; and 3.61 and 22.80 kcal.mol-1, respectively. The sensory changes observed by the trained panel are related to the degradation of vitamin C and changes in the color coordinates (L* and ΔE*) of mango juice. However, consumers were unable to detect changes in the overall quality of the juices. It was observed that the QDA can be a useful tool to assess shelf-life.

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Nematocid effects of watercress (Nasturtium officinale R. Br.)

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun201361010233 ◽

2013 ◽

Vol 61 (1) ◽

pp. 233-236 ◽

Cited By ~ 5

Author(s):

Helena Zahradníková ◽

Kristína Petříková

Keyword(s):

Vitamin C ◽

Positive Influence ◽

Meloidogyne Hapla ◽

Root Knot Nematode ◽

Promoting Effect ◽

Tomato Plants ◽

Yield Increase ◽

Nasturtium Officinale ◽

The Difference ◽

Leaf Vegetable

The watercress (Nasturtium officinale R. Br.) is often grown as a forced leaf vegetable rich in vitamins and minerals. Its specific taste and curative effects result from the presence of mustard glycosides (glucosinolates) that may also show nematocidic effects. The aim of this study was to evaluate the effect of watercress eluate and juice on tomato plants inoculated with the northern root-knot nematode (NRKN) Meloidogyne hapla. It was found out that after the treatment of plants with solutions derived from watercress the yield of fruit was highly significantly increased. The highest yield increase (by 96 % to 165 %) was observed in the variant with the highest concentration of watercress extracts (macerate + 200 ml of juice). Although at lower concentrations of watercress solution the increase in yields was also reduced (by 57–118 %), the difference was still statistically highly significant. The effect of this treatment on the content of vitamin C was similar and the increase was also highly significant and ranged from 24 to 67 %. When evaluating the occurrence of nematodes on roots of tomato plants, the presence of pathogens was equal to zero percent in all treated variants. The treatment with this phyto-solution corroborated not only a nematocidic effect of watercress but also its positive influence on the yield and level of vitamin C in dependence on increasing concentrations of the effective agent. It can be therefore concluded that the watercress solution showed a promoting effect on tomato plants.

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Mathematical modeling of the thermal degradation kinetics of vitamin C in cupuaçu (Theobroma grandiflorum) nectar

Journal of Food Engineering ◽

10.1016/s0260-8774(99)00121-1 ◽

2000 ◽

Vol 43 (1) ◽

pp. 1-7 ◽

Cited By ~ 75

Author(s):

Margarida C Vieira ◽

A.A Teixeira ◽

C.L.M Silva

Keyword(s):

Mathematical Modeling ◽

Thermal Degradation ◽

Vitamin C ◽

Degradation Kinetics ◽

Thermal Degradation Kinetics ◽

Theobroma Grandiflorum ◽

Kinetics Of

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Modelling sensorial and nutritional changes to better define quality and shelf life of fresh-cut melons

Journal of Agricultural Engineering ◽

10.4081/jae.2013.e6 ◽

2013 ◽

Vol 43 (4) ◽

pp. 6 ◽

Cited By ~ 5

Author(s):

Maria Luisa Amodio ◽

Antonio Derossi ◽

Giancarlo Colelli

Keyword(s):

Vitamin C ◽

Shelf Life ◽

Consumer Choice ◽

Degradation Kinetics ◽

Chemical Constituents ◽

Soluble Solids ◽

Model Parameters ◽

External Appearance ◽

Fresh Cut ◽

The Moment

The shelf life of fresh-cut produce is mostly determined by evaluating the external appearance since this is the major factor affecting consumer choice at the moment of purchase. The aim of this study was to investigate the degradation kinetics of the major quality attributes in order to better define the shelf life of fresh-cut melons. Melon pieces were stored for eight days in air at 5°C. Sensorial and physical attributes including colour, external appearance, aroma, translucency, firmness, and chemical constituents, such as soluble solids, fructose, vitamin C, and phenolic content, along with antioxidant activity were monitored. Attributes showing significant changes over time were used to test conventional kinetic models of zero and first order, and Weibullian models. The Weibullian model was the most accurate to describe changes in appearance score, translucency, aroma, firmness and vitamin C (with a regression coefficient always higher than 0.956), while the other parameters could not be predicted with such accuracy by any of the tested models. Vitamin C showed the lowest kinetic rate among the model parameters, even though at the limit of marketability (appearance score 3), estimated at five days, a loss of 37% of its initial content was observed compared to the fresh-cut product, indicating a much lower nutritional value. After five days, the aroma score was already 2.2, suggesting that this quality attribute, together with the vitamin C content, should be taken into account when assessing shelf life of fresh-cut melons. In addition, logistical models were used to fit the percentage of rejected samples on the basis of non-marketability and non-edibility (appearance score <3 and <2, respectively). For both parameters, correlations higher than 0.999 were found at P<0.0001; for each mean score this model helps to understand the distribution of the samples among marketable, nonmarketable, and non-edible products.

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A REVIEW ON PHYTOCHEMICAL AND PHARMACOLOGICAL POTENTIAL OF WATERCRESS PLANT

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2018.v11i12.29422 ◽

2018 ◽

Vol 11 (12) ◽

pp. 102

Author(s):

Sachin Chaudhary ◽

Hazar Hisham ◽

Doha Mohamed

Keyword(s):

Urinary Tract Infection ◽

Folic Acid ◽

Urinary Tract ◽

Tract Infection ◽

Vitamin A ◽

Vitamin C ◽

Food Supplement ◽

Nasturtium Officinale ◽

Perennial Plant ◽

Pharmacological Potential

Nasturtium officinale (family: Brassicaceae) that is commonly known as watercress is a fast-growing aquatic or semi-aquatic perennial plant native to Europe, Central Asia. It is a highly significant food supplement, extensively consumed with salad, juices, or other dishes as an ingredient, flavor, or garnish. The leaves are traditionally used as stomachic, depurative, diuretic, expectorant, hypoglycemic, odontalgic, and stimulant. Meanwhile, it has been used to treat jaundice, asthma, bronchitis, scurvy, tuberculosis, urinary tract infection, and calculi. N. officinale is rich in glucosinolates, carotenoids, polyphenols, as well as Vitamin C, Vitamin A, and α-tocopherol. It is the main source of iron, calcium, iodine, and folic acid.

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