Algae as production systems of bioactive compounds

2015 ◽  
Vol 15 (2) ◽  
pp. 160-176 ◽  
Author(s):  
Izabela Michalak ◽  
Katarzyna Chojnacka
Keyword(s):  
Bioactive Compounds ◽  
Production Systems

Composition of commercially produced organic and conventional strawberries

2014 ◽  
Vol 44 (6) ◽  
pp. 562-575 ◽  
Author(s):  
Tõnu Tõnutare ◽  
Kati Keert ◽  
Lech Szajdak ◽  
Ulvi Moor
Keyword(s):  
Bioactive Compounds ◽  
Design Methodology ◽  
Total Phenolics ◽  
Production Systems ◽  
Soluble Solids ◽  
Fragaria Ananassa ◽  
Cultivation System ◽  
Content Type ◽  
Total Antioxidant ◽  
Solids Content

Purpose – The purpose of this study was to determine differences in taste-related and bioactive compounds of organically (OR) and conventionally (CONV) cultivated commercially produced strawberries (Fragaria × ananassa Duch.). Addresses the question if the consumers buying OR strawberries are likely to purchase fruits with better taste and richer in bioactive compounds than those buying CONV fruits. Design/methodology/approach – Only information commonly available to the consumers [cultivar, quality class, product origin (country) and eco-labelling], was considered in selecting experimental material. “Polka” strawberries from 14 farms (7 OR and 7 CONV) from South Estonia were used for analyses. Findings – No evidence was found that OR strawberries contain more bioactive compounds or have higher soluble solids content and titratable acids ratio (associated with better taste) compared to CONV strawberries. There were significant differences in content of total phenolics, anthocyanins, ascorbic acid, vitamin E, total antioxidant capacity, titratable acids and soluble solids between strawberries from individual farms irrespective of cultivation system. Research limitations/implications – Our study was limited to strawberry “Polka” and some other cultivars might response differently to production systems. Social implications – Consumers get information that by choosing an organic product in the marketplace, it is not guaranteed that this product has higher content of bioactive compounds. Originality/value – Comparative studies of organic and conventional products are preferably performed with products grown at the same location with the same amount of nutrients etc. However, information of production site’s microclimate, soil texture or the amount of plant available nutrients is never available to the consumers. Therefore, our consumer-oriented approach might be valuable.

scholarly journals Tropical agroindustrial biowaste revalorization through integrative biorefineries—review part I: coffee and palm oil by-products

2021 ◽  
Author(s):  
Jose-Aníbal Mora-Villalobos ◽  
Francisco Aguilar ◽  
Ana-Francis Carballo-Arce ◽  
José-Roberto Vega-Baudrit ◽  
Humberto Trimino-Vazquez ◽  
...  
Keyword(s):  
Caffeic Acid ◽  
Bioactive Compounds ◽  
Sugar Cane ◽  
Oil Palm ◽  
Production Systems ◽  
Industrial Process ◽  
Quinic Acid ◽  
Caffeic Acid Phenethyl Ester ◽  
Added Value ◽  
By Products

AbstractTropical crops are an important source of wealth in many countries. The current agribusiness model is based on the production of a final commodity, leading to the production of organic by-products (biowastes) that in many cases contain bioactive compounds with a potential added value. The exploitation of these by-products is the foundation of the circular economy that leads to the generation of greener bioprocesses for the industry with foreseeable economic improvements in production systems. This review aims to point out the idle opportunities of agricultural production systems and their associated biowastes to contribute to the establishment of a bioeconomy. Hence, the focus lies on five tropical extensive crops: coffee, oil palm, sugar cane, banana, and pineapple. This first part of the review explores agricultural wastes originated from the coffee and oil palm industrial process and is oriented on the potential use of these by-products as a starting material for the alternative obtention of chemicals, otherwise obtained from petrochemistry. The second part of the review focuses on prospective use of lignocellulosic rich biowaste that is derived from the industrialization of sugar cane, banana, and pineapple. A fundamental difference for the use of coffee biomass compared to other crops is the presence of numerous bioactive compounds that are not yet properly utilized, such as antioxidants (i.e., caffeic acid, chlorogenic acid, ferulic acid), as well as their possible use in the manufacture of products of interest in the cosmetic (i.e., quinic acid) or pharmaceutical industry (i.e., caffeic acid phenethyl ester). In the case of oil palm, its potential lies in obtaining chemicals such as glycerol and carotenoids, or in the bioenergy production.

scholarly journals Seed priming with ZnO nanoparticles promotes early growth and bioactive compounds of Moringa oleifera

2021 ◽  
Vol 49 (4) ◽  
pp. 12546
Author(s):  
Carlos A. GARZA-ALONSO ◽  
Yolanda GONZÁLEZ-GARCÍA ◽  
Gregorio CADENAS-PLIEGO ◽  
Emilio OLIVARES-SÁENZ ◽  
Libia I. TREJO-TÉLLEZ ◽  
...  
Keyword(s):  
Vitamin C ◽  
Bioactive Compounds ◽  
Photosynthetic Pigments ◽  
Zno Nanoparticles ◽  
Moringa Oleifera ◽  
Production Systems ◽  
Dry Weight ◽  
Seed Priming ◽  
Second Phase ◽  
Initial Growth

Nanotechnology has gained importance in agricultural production systems, with various applications such as pesticides or fertilizers. The application of nanomaterials (NMs) as a pretreatment to seeds (seed priming) has positively affected plant growth and development. On the other hand, Moringa oleifera is a plant appreciated for its multiple nutraceutical properties. Therefore, the objective of this study was to evaluate the effect of pretreatment of M. oleifera seeds with ZnO nanoparticles (NZnO) (0, 0.5, 2.5, 5, 7.5, and 10 mg L-1). The study was divided into two experimental phases: the first phase consisted of evaluating germination under laboratory conditions (25 °C) at 15 DAS, while in the second phase, vegetative growth and bioactive compounds were evaluated at 45 DAS under greenhouse conditions. For phase one, the percentage of germination, length, and dry weight of the plumule and radicle were considered, and the vigor indices of seeds were determined. In phase two, we measured the plant height, stem diameter, fresh and dry biomass of aerial and root parts, and the concentration of photosynthetic pigments, phenolic compounds, flavonoids, vitamin C, glutathione (GSH), and antioxidant capacity (DPPH), such as the activity of antioxidant enzymes such as ascorbate peroxidase (APX), catalase (CAT), glutathione peroxidase (GPX), and phenylalanine ammonium lyase (PAL). The results showed an increase in some variables related to seed germination, with an increase of between 30 and 25% in the vigor of the seeds subjected to 2.5 and 10 mg L-1 NZnO. The photosynthetic pigments resulted in increases of between 23 and 49% for the 7.5-10 mg L-1 NZnO treatments. Regarding bioactive compounds, the increase in phenols, flavonoids and vitamin C stands out, mainly at the levels of 7.5-10 mg L-1 NZnO, where increases of up to 543% were observed with respect to the control. The enzymatic activity showed different responses to the application of NZnO, where a biphasic response (hormesis) was observed on the activity of APX and CAT activities as the levels of NZnO increased. The results show that it is possible to promote the initial growth and bioactive compounds of M. oleifera by pretreatment of seeds mainly with 10 mg L-1 NZnO.

Investigation of bioactive compounds in the genus Garcinia (Guttiferae) of Cameroon

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
B Biloa Messi ◽  
R Ho ◽  
A Meli Lannang ◽  
JG Tangmouo ◽  
A Marston ◽  
...  
Keyword(s):  
Bioactive Compounds

Strategies and Methods for a Sustainable Search for Bioactive Compounds

Planta Medica ◽  
2012 ◽  
Vol 78 (05) ◽  
Author(s):  
L Bohlin ◽  
C Alsmark ◽  
U Göransson ◽  
M Klum ◽  
C Wedén ◽  
...  
Keyword(s):  
Bioactive Compounds
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