An investigation, on the roots of Piper nigrum and the aerial parts of Piper betle, has yielded several alkaloids. The dried root sample of Piper nigrum was extracted using various solvents in increasing polarity. The dried aerial part of Piper betle was extracted using the Soxhlet extraction method. The alkaloids isolated were pellitorine(1), (E)-1-[3’,4’(Methylenedioxy)cinnamoyl]piperidine(2)...

The Clitoria ternatea, Solanum nigrum and Aloe vera leaves were extracted serially by the solvents of increasing polarity (petroleum ether, chloroform and ethanol) were tested for their free radical scavenging activity against DPPH. The petroleum ether extracts of Clitoria ternatea, Solanum nigrum and Aloe vera leaves were the most effective scavenging of DPPH. These plant extracts were also an...

Implementation of water-saving irrigation practices in lowland rice results increased availability nitrate (NO3−) the soil and favours germination upland weeds. Since plant species show a specific preference for either ammonium (NH4+) or NO3− as nitrogen (N) source, changes both concentration weed flora may affect competition between Further, transpirational demand atmosphere might growth compe...

The interest in phenols and anthocyanins has increased due to their antioxidant properties and to their potential usage as dietary antioxidants in human nutrition. Total phenols and anthocyanin content, composition and stability in berry extracts of blackcurrant interspecific hybrids, and antioxidative activity of extracts was evaluated. Berries of interspecific hybrids accumulated 530 to 614 m...

The phytotoxic and antimicrobial properties of olive mill wastes have been widely investigated and demonstrated over the past decade. However, their potential utilization as biodegradable pesticides against plant pathogens is still poorly understood. In this study, a series of laboratory bioassays was designed to test the inhibitory effects of sterile water extracts of two-phase olive mill wast...

The use of essentials oils (EOs) as alternative nitrites and nitrates in sausages will be proposed this study. For purpose, the minimal inhibitory concentration (MIC) white Piper nigrum Penja, Thymus vulgaris Syzigiuim aromaticum EOs were determined vitro against Escherichia coli ATCC25922, Salmonella enteritidis 155A Staphylococcus aureus NCTC10652. It follows from study that, T. EO was active...

The efficacy of extracts from two Piperaceae species, Piper nigrum L. and P. tuberculatum Jacq. were evaluated using larvae and adults of the Colorado Potato Beetle Leptinotarsa decemlineata (Say). Young larvae and neonates were the most susceptible; a 24-h LD(50) of 0.064% extract of P. tuberculatum was determined for 4-day-old larvae, while 0.05% extract of P. nigrum reduced larval survival u...

The internal anatomical structure of the above-ground vegetative organs S. nigrum  from Georgian flora - a rich source physiologically active compounds, has been examined using conventional laboratory methods used in microtechnics. study revealed diagnostic markers prospective medicinal plant. nigrum's aboveground are covered with conical, multicellular, hooked villis and rare spheroidal g...