scholarly journals Red and Purple Flesh Potatoes a Healthy and Attractive Alternative Associated with New Market Trends

2021 ◽  
Author(s):  
María-Teresa Pino ◽  
Cristina Vergara

The potato is the fourth most important crop in the world in terms of human food, after maize, wheat and rice (FAOSTAT, 2019). The cultivated potato is a vital food-security crop considering its worldwide growth, from latitudes 65° Lat N to 53° Lat S, high yield, and great nutritive value. The potato is a good source of dietary energy and micronutrients, and its protein content is high in comparison with other roots and tubers. The cultivated potato is also a concentrated source of vitamin C and some minerals such as potassium and magnesium. Tuber flesh color generally ranges from white to dark yellow in cultivated potato; however, the high potato diversity shows tuber flesh color varies from white to dark purple. Red and purple-flesh potatoes are an interesting alternative for consumers due to phenolic compounds and antioxidant capacity. The goal of this publication is to show the advances in red and purple flesh potato, in terms of anthocyanin profile, color extraction and stability in simulated in vitro digestion.


2014 ◽  
Vol 153 (2) ◽  
pp. 371-380 ◽  
Author(s):  
A. L. A. NEVES ◽  
R. D. SANTOS ◽  
L. G. R. PEREIRA ◽  
G. F. OLIVEIRA ◽  
C. B. SCHERER ◽  
...  

SUMMARYForage sorghum (FS) (Sorghum bicolor(L.) Moench) is a key feed source for ruminants owing to its high yield and drought tolerance. The present paper assessed the agronomic characteristics, silage quality, intake and digestibility of five new Brazilian sorghum cultivars (BRS Ponta Negra variety, BRS 655 hybrid, BR 601 hybrid, BRS 506 variety and BRS 610 hybrid). Forages were grown (randomized complete block design) in a typical Brazilian north-eastern semi-arid climate, irrigated with 267 mm water, harvested as plants reached the soft dough stage of grain maturity and ensiled under laboratory and farm conditions. Apparent digestibility of the silages was determined using 25 Santa Inês lambs. BRS 506 outperformed the other cultivars in dry matter (DM) and digestible DM yields/ha. BRS 506 exhibited the lowest neutral detergent fibre (NDF) and acid detergent fibre (ADF) contents and the highestin vitrodry matter digestibility (IVDMD) of the cultivars examined. BRS 655 produced the lowest level of lactic acid and the highest pH and ammonia-N concentration. There was no difference in intake or digestibility of DM among cultivars. Silages produced from BRS Ponta Negra resulted in higher crude protein (CP) intake than BRS 655. Silages made from BRS 506 and BRS Ponta Negra resulted in a greater digestibility of CP than those produced from BRS 655. Intake of NDF in silages generated from BRS Ponta Negra and BRS 610 was higher than that found in other cultivars. Although an average Brazilian North-eastern FS exhibited similar characteristics to other cultivars grown in dry regions around the world, the results indicated that BRS 506 had a yield advantage and higher nutritive value under Brazilian semi-arid conditions as compared to the other cultivars examined.



1987 ◽  
Vol 43 (5) ◽  
pp. 725-730 ◽  
Author(s):  
MITSUKAZU GOTOH ◽  
TAKASHI MAKI ◽  
SUSUMU SATOMI ◽  
JANIS PORTER ◽  
SUSAN BONNER-WEIR ◽  
...  


2017 ◽  
Vol 214 ◽  
pp. 486-496 ◽  
Author(s):  
Carlos Pineda-Vadillo ◽  
Françoise Nau ◽  
Catherin Guerin-Dubiard ◽  
Julien Jardin ◽  
Valérie Lechevalier ◽  
...  


2009 ◽  
Vol 2009 ◽  
pp. 187-187
Author(s):  
M Besharati ◽  
A Taghizadeh ◽  
A Ansari

Probiotics present an attractive alternative to the use of chemical and hormonal promoters in the livestock growth production industry. Preparations that contain micro-organisms have been safely used for many years and are generally accepted by both the farmer and the final consumer. Saccharomyces cerevisiae supplementation in ruminant diets can increase DMI, production performance, cellulose degradation, and nutrient digestibility (Callaway and Martin, 1997). The gas measuring technique has been widely used for the evaluation of nutritive value of feeds. Gas measurement provides useful data on digestion kinetics of both soluble and insoluble fractions of feedstuffs (Getachew et al., 1998). In the gas method, kinetics of fermentation can be studied on a single sample and therefore a relatively small amount of sample is required or a larger number of samples can be evaluated at time. The purpose of this study was to study effect of adding different levels of Saccharomyces cerevisiae on in vitro gas production from a dried grape by-product.



2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 404-405
Author(s):  
Jessica Gusmão ◽  
Marcio Bastos ◽  
Luciana Lima ◽  
Marcus Cardoso ◽  
Thiago Bernardes

Abstract The aim of this study was to assess the nutritive value of snaplage as affected by hybrid and maturity. Five corn hybrids were grown at 70,000 plants/ha on three replicate plots (5 x 5 m) in each of three blocks (21°14′ S, 44°58′ W). Hybrids were harvested at target maturity stage of 40, 35, and 30% of moisture (M1, M2, and M3, respectively) by removing ears from two rows in each plot. Ears were weighed and split into two subsamples. One was split into kernels, husk and shank, and cob, weighed and oven-dried. The second subsample was processed and ensiled in 5-L jars for 90 d. Measurements included dry matter (DM) yield, nutrient analysis and in vitro digestion of neutral detergent fiber (NDF-D, 48h). The experimental design was randomized complete blocks using a mixed repeated-measures model. Data were analyzed using MIXED procedure of SAS, followed by a Tukey test at P ≤ 0.05. Mean moisture at harvest were 42.9, 36.8, and 31.3% for M1, M2, and M3, respectively. The DM yield was unaffected by hybrid and maturity (on average = 19 t/ha). The NDF concentration of husk increased at each maturity (81.5, 83.4, and 83.7% DM, respectively) and NDF-D decreased (45.5, 43.4, and 41.4%, respectively). The NDF concentration of cob increased at each maturity (76.0, 79.5, and 81.6% DM, respectively) and NDF-D decreased (47.3, 43.7, and 38.4%, respectively). Among hybrids, NDF concentration of snaplage varied from 20.9 to 24.5% DM (P = 0.014). The NDF-D of snaplage decreased at each maturity (Figure 1; P = 0.001). The starch concentration of snaplage increased from M1 to M2, but no difference between M2 and M3 (P = 0.009). Snaplage has a wide harvest window; however, changes in the nutritive value of snaplage as affected by maturity should be considered when formulating diets.



2020 ◽  
Vol 158 (3) ◽  
pp. 225-232
Author(s):  
R. D. Santos ◽  
A. L. A. Neves ◽  
L. G. R. Pereira ◽  
L. E. Sollenberger ◽  
E. N. Muniz ◽  
...  

AbstractPearl millet (Pennisetum glaucum (L.) R.) is an important crop for rainfed production systems and can play a significant role as a feed source for ruminants owing to its high yield and drought tolerance. It is well-established that the maturity stage can influence the chemical composition as well as the nutritional value of crops traditionally used for silage production, although quantitative evidence that this occurs with pearl millet under rainfed conditions is lacking. The current research assessed the agronomic characteristics, ensilability, intake and digestibility of a Brazilian pearl millet cultivar (IPA BULK1-BF) harvested at four different growth stages. Forage was harvested at 35, 50, 65 and 80 days after sowing and ensiled under laboratory and farm conditions. Apparent digestibility of the silages was determined using 24 male lambs. The results showed that dry matter (DM) and panicle and stem proportions increased with the advancement maturity. The silage evaluations showed that DM, total and non-fibrous carbohydrates and lignin concentrations increased, while crude protein, ADF and in vitro DM digestibility decreased with the increase in plant maturity. Additionally, the fermentation characteristics were improved with the increasing maturity. The digestion study showed that intake of DM and N as well as digestibility of DM and fibre fractions decreased, while lignin intake increased. The results obtained for the production of dry and digestible DM, the ratio of plant fractions and fermentation parameters indicate the possibility of harvesting pearl millet forage after 50 days after sowing for silage production in the Brazilian semi-arid region.



1986 ◽  
Vol 26 (5) ◽  
pp. 543 ◽  
Author(s):  
JB Hacker

Nineteen F1 families were produced by pair-crossing 7 stoloniferous genotypes of Digitaria milanjiana. Progenies and parents were grown as spaced plants (0.5 by 0.5 m microswards) and plucked samples were taken from vegetative regrowth in 2 successive seasons for estimation of digestibility using the in vitro cellulase method. Stolon number, herbage yield (one, 9-week regrowth), flowering date and leaf width were also assessed. Parental clones differed significantly in plucked sample digestibility (range 4.1 units) and there was no significant clonexyear interaction. Heritability, based on parent-progeny regression, was 0.86. The occurrence in progenies of a low percentage (4.9%) of genotypes with plucked sample digestibility significantly higher than that of the higher parent suggested that genetic improvement of plucked sample digestibility may be possible. However, such segregates did not occur in the progeny of high digestibility parents. Digestibility of plucked samples was not correlated with any of the agronomic attributes measured. This, together with the high heritability for stolon number (h2 = 0.86) indicates that it is feasible to breed a genotype of D, milanjiana with high yield, high leaf digestibility and vigorous stolon development for clonal propagation. Genotypes with a mean plucked-sample digestibility of >70.0% occurred in 11 families. For these families highest and lowest digestibility genotypes were further sampled; only the top 2 fully expanded leaves were analysed. Conclusions derived from plucked samples were confirmed, showing that full-sibs differed genetically in leaf digestibility. Three pairs of full-sibs, which differed in leaf digestibility by 5.0-7.2 units, were selected for in vivo and physiological comparison.



1977 ◽  
Vol 57 (1) ◽  
pp. 187-193 ◽  
Author(s):  
G. M. J. HORTON ◽  
L. W. McELROY

The nutritive values of sedge and Kentucky bluegrass hays grown in a partially drained lake bottom in central Alberta were assessed in the laboratory and compared with those of brome–fescue hay and oat straw. The extent and rate of in vitro digestion for each forage with rumen fluid from cows fed either sedge, Kentucky bluegrass or brome–fescue were measured using a two-stage technique. The forages were analyzed for proximate components and minerals, and the rumen fluid for trichloroacetic acid-insoluble nitrogen (TCA-N) and volatile fatty acids (VFA). The effects of sulphur and phosphorus supplementation on the in vitro digestion of purified cellulose in the presence of aqueous extracts of sedge, Kentucky bluegrass and brome–fescue were also determined. In vitro dry matter and cellulose digestibilities were highest for brome–fescue and lowest for oat straw; DMD values for Kentucky bluegrass were consistently higher (P > 0.05) than for sedge. Phosphorus supplementation did not enhance cellulose digestion with brome–fescue extract, but with sedge and Kentucky bluegrass extracts, the responses were significant. Ruminal TCA-N and VFA concentrations were highest after feeding brome–fescue, followed by Kentucky bluegrass and then sedge. These studies indicated that the nutritive value of brome–fescue hay was highest, followed by Kentucky bluegrass and sedge hays, and then oat straw.



2007 ◽  
Vol 2007 ◽  
pp. 209-209
Author(s):  
Morteza Chaji ◽  
Abasali Naserian ◽  
Reza Valizadeh ◽  
Freidon Eftekharishahroodi

Crop residues are a major source of low-quality biomass that can be fed to ruminants. Sugarcane bagasse and sugarcane pith, the residue after rind removal, are highly lignified by products of the sugar and paper industries, respectively (Muller, 1978). The low digestibility, high lignin and very low nitrogen content, are considered the main reasons for unsatisfactory performance of animals fed this roughage. Steam-pressure treatment cleavage the bounds between lignin and the other component of the cell wall, These are associated with the improved utilization of cell wall polysaccharides in the steam pre-treated materials by cell-free enzymes and enzymes of the rumen microbial ecosystem. The possibility of increasing nutritive value of fibrous feedstuffs by enzymes treatment has been studied in recent years. A number of studies in the 1960s involving cattle and sheep showed that enzymes substantially improved feed digestibility and animal performance, but results were often inconsistent The objectives of our study were to characterize the response of sugarcane bagasse, pith, untreated and steam treated, to sodium hydroxide and enzyme mixtures treatment.



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